My dear, as with men, it's not the 'meat' but the 'motion' that counts. What science has shown is that women who start masturbating at an early age are more likely to be orgasmic in their adult lives - see Kinsey, Johnson & Masters, etc. Sadly, the current literature states that but 17% of women achieve orgasm through vaginal intercourse. My personal, anecdotal survey of my three ex-wives, fifty or so other women and perhaps a couple of dozen providers is that those who love trips to Greece irrespective of clit size are the most consistenly orgasmic. But, is orgasm by itself not mostly over rated? The French call orgasm "the little death." Loved your site.
so I doubt if it's much of a factor, if any. Other factors are much, much more important.
One of the strongest correlations is between a woman's orgasmic potential and the type of father she had: Consistently orgasmic women had fathers who were emotionally stable, were involved in their daughter's lives, and who had high expectations for their daughters.
By "big" or "small" I assume you mean the length that is revealed... actually a woman's clitoris is several centimeters long (about 10cm (4 in.) I think... too lazy to look it up), and runs along the vagina... the "tip" that is visible when you open the vulva or pull back its little hood is just a minor fraction of the whole.
So, whether a woman has a barely discernable clitoris, or one that protrudes an entire centimeter, the "actual" length doesn't vary as much.
That said: obviously a more "visible" one is more suckable, and might invite more enthusiastic attention resulting in "more orgasms". But that is a reaction to the cosmetic, not an inherent feature of clitoral geometry. A very hidden one can be hard to lick, and some guys probably give up, or they try too hard and overreach the clit's sensitivity, giving the impression that the "tiny" ones are too sensitive (a common complaint.)
My finding has been that every woman is unique, and her mindset has as much to do with sensitivity... many clients dive there immediately to "pleasure" her, rather than warming her up with caresses, kisses, erotic talk, and the like.
Hint: DATY should not be used to "make her wet"... she should be wet already by the time you get there, and she will enjoy it more. I love to have a woman lie back, while I caress her, tease her nipples, brush my fingers over her labia (never quite touching heaven), kissing her lips, neck, body... after maybe 15 minutes, you will see a little dollop of wetness filling the opening of her vulva, maybe dripping out: its very sexy, and NOW is the time to apply some tongue. Building the suspense gets quite a reaction.
Explore, too... every woman has different triggers: some like it fast, some slow; some like transverse licking, some vertical, some "the alphabet"; some like the tongue to dip occasionally into the vagina... listen to her breathing, her words, and her body to find the rhythm. Her mind and your sensitivity to it far outweigh the geometry of her clitoris.
Women are wonderful because they are so sexually complex: Everything is an erogenous zone... hair, ears, eyes, lips, mind, everything.
And think icecream cone... slow, luxurious, deep licks. Enjoy the flavors, and a shiver of a different sort.
O.