"Big woman, small hole. Small woman, all hole"
The smaller women I've been with were all just as capable of taking my size. The tightest woman I've ever been with was 5'7" and rather chubby. Her vagina could grip one of my fingers, and extended lovemaking typically left my penis with rub burns, regardless of using lube or not.
Pretty damn accurate, i'm 7x6.5 and one of the tightest i've fucked was 5'10" wouldn't say chubby but big tits, big ass, thick thighs and even when she was really primed i had to ease it in and when that chick had an orgasm if i kept it inside her talk about vagina death grip, i would be sore the following day. She was tight and wet and really tested my stamina.
on the other end of the spectrum i've got a fuck buddy 5'4"[?] and super skinny, no tits, decent ass though, very athletic she was fairly inexperienced when i first started banging her and she's not really the sleep around type, at first i could barely get myself inside her, but once she relaxed and got used to it its like fucking a gaping hole, and shes so skinny it hurts to really fuck her hard, thank god she has a decent ass for some cushion, when i want to finish just take her from behind with her legs together and go to town. the skinny ones i find are good for one round that's it, can't go over and over with them, pussy just opens up and theres nothing there.
Overall, all time best I've been with, she was 5'1" and curvy, couldn't have been any more than 130lbs, half her weight was in her tits i swear [32F] and had 3 kids but still had a tight body, despite the kids that pussy was like heaven, incredibly wet but tight and pillow like walls, she could take a pounding.
all that being said i prefer them under 5'4" and at a healthy weight, little extra chub always means she's going to have good pussy I've found.