I think this subject is very subjective, as to what results in a tight pussy. High mileage usually means looser, think this is the general concensus but not always necessarily true. Think the key is to whether the girl uses her lower body or not
Usually the heavy bottom ones.. likely never work out their lower body. Hence, their pussy muscles are not so strong.
I just went for jia jia from 1654a and boy was she tight. But tbf, her mileage quite low. On the flipside, she said a bro complained she's loose. So I dunno why he said that.
For me.. ang mohs in general have a wider pelvis, hence their pussy is looser or should I say, wider.
Age also plays a different if you don't maintain your body.
Actually not always, the tighter the better, just like dicks, mot always the bigger the better.
You have to find a size thar fits you
Just my 2 cents...