Dude ur splitting hairs...lol 9, 9.5, 10, 11....it's all the same thing IMO. If it's legit and 8+ then she packin alotta meat.
Ty-clone is right....all about proportions and when dealing with these ads/claims, gotta apply the -3 Tgirl theorem. Could be wrong, but I would guess <20% live by "truth in advertising". I don't carry around a ruler, tape measure or truth meter...not that serious. After a few minutes, u will know if it's big, average or not-so-much... 9.5 or 10...eyeball/hand test cannot differentiate...do not pass go, do not collect $200...go directly to the BIG DICK category. :D