But honestly, you just can't get a bad cheese-steak hoagy in Philly.

You silly, silly man.

You are an out of towner obviously. Pats and Geno's are famous bc they are right across the street from each other and they have a rivalry, but not because they are the best. Pat's is considered to be the originator of the sandwich so there's that.  
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Now, "the best" is always going be subjective of course, but most Philadelphian's would not consider either to be in that lofted category. Most would say the best steaks are either Jim's on South Street or Dalessandro’s, in the Roxborough section of town. John's Roast Pork (but better known for their steak sandwich) will usually get the bronze.
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All that said, I generally tell Philly neophytes to go to Pat's and Geno's to sample both if they are coming to town for just a day and want a traditional cheesesteak in an iconic setting in South Philly. It's an interesting area, to say the least, especially later at night after a Phillies or Eagles game.  
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We'll get into "Wiz, Wit" another time as that is for more advanced cheesesteak aficionados. I'll give you a hint...it's how we order them. lol