Definitely more than half.  Probably like 80%.

during my 20's, and mostly picked up women for one-night stands, so there were a few thousand.  I was good-looking and attractive women often made the first move only to discover after a few trysts how shallow I was during those years.  I'm more mature now.  Lol   Nevertheless, they were all between 18 and 28.  

 
Now that I'm a little over 60, I'm more attracted to women 30-40, and these are the ones I see in the P4P world now.  There are few 30-40 year olds that are as hot as a hot 25 year old.  I realize its an apples and oranges comparison, but you set the rules, so I would say about 80% are LESS attractive than the average women I saw in my 20's, mainly because back  then, they were considerably younger.  

If I never dated that would make it 100% or 0%?

20% Less Attractive

I have a type and as long as I stick to that, I find 8 out of 10 to be as attractive or better than my civvy dating.

Every so often I take a chance on exploring outside my type and that accounts for the 20%.  

I can't imagine ever dating a woman that didn't meet certain minimum standards for looks, probably no less than a TER 8 or 9 as a minimum. OTOH while I try not to make a habit out of it I have had some rather enjoyable sessions with women who were less than a TER 8.  

 
I guess if I had to put a number to it, maybe 20% of the women I have paid to see are LESS attractive than the women I tend to date IRL. BUT offsetting that number I have to concede that I have seen some incredibly hot women that I have paid to see that most likely I could never have been with without paying for the privilege.  

 
One other thing that skews the numbers is that most hookers don't have to pass "the light of day" test. I guarantee that many of the hookers that I have seen ONLY naked in soft light were to show up at my door in broad daylight I might lose all interest in fucking them. OTOH, virtually all the women I have seen "down south" in Latin America I've met up close and in person BEFORE ever agreeing to go BCD with them, so those numbers are much different than the women who I have booked with over the internet with only a handful of photo shopped pics and the not always reliable opinions of the guys who have reviewed them to go by.

I was a "Good Boy" until I started in the hobby.  Only fucked  five different women, including my two wives (one passed from cancer) before becoming a monger.  

Taking a women to bed is different then just dating, so I will change the criteria to fucking with these five as my benchmark.

One was strawberry blond, one brunette, three blonds.

Based on that small sample size I would guess that:

20% were below standards......mostly cause of how poorly they took care of themselves.  

50% consistent with my sample size.

30% no way in hell would I ever be able to fuck these ladies in the real world.

Importantly, this assumes I am in my late 20's or so.  

An equally interesting question could be personality.  How many would fit my personality style.  Not a reflection on their personality, just if I thought we would click in real life.

Being brutally honest, about 70% would not, maybe more, and perhaps  30% would.  Again, not being a snob here, just being realistic.  I don't party, I do have some actives for recreation beyond being a monger, and I read a great deal. Also, I do not play golf and am not rich.  In other words, boring outside of loving sex.

I'd guess over a couple of decades of playing that 10% of the women whose company I paid for I would not hit on in a bar. But most of those were in the bad old days of looking through the Yellow Pages and local adult newspapers. After leaving the dark ages I'd guess that shrank to less than 5%.  In the last 10 years I can only think of maybe 5 total.  

On the other hand, 60 to 70% wouldn't have spit on me if I was on fire outside the Matrix.

Not to pay for pussy I could pick up for free, or wouldn't want in the 1st place. Of course...now im much older, so even an unattractive woman in her 30's is probably beyond my abilities now.  
I still pick based on attraction though, so I havent paid for anyone that I dont find attractive, and therefore...unattainable to me in civilian efforts.
Old age is a bitch!

Every now and then I just need to scratch the itch.  Then, I regret it the next day.  I can honestly say that 95% of the ladies that I pay to see are more attractive than the women I've dated.  Mainly because the women I've dated in my real life could all fit in an elevator, at the same time.  

As such, I've been all over the map with both my regular life dating history and the providers I see.  When it comes to facial features, I don't strictly require the so-called supermodel look.  Actually, I purposefully gravitate away from those types.  

Put me down as 50/50%.

If it's not dated seriously but rather flings then it's 75%ish

 
I choose girls by their skills, not looks. I mean, looks are a nice bonus, but near useless without skills. I'm not here to look, I'm here to be screwed by the pros.

I've dated men who were super hot - the model type in my early 30's.

But those were just fucks. They weren't the kinds of men I actually found attractive. The men I have found attractive are generally brilliant leaders in industries that require massive skills, education, and way above average IQ's.

Never actually landed one of those guys - except one.

So, here - when it comes to actually being ATTRACTIVE to me, then my clients are almost all more attractive then men I've dated. The fact that they pay makes them win over the two guys I actually found attractive intelligence wise IRL.