I haven't done any scientific analysis, the point being it's quite easy to tell "at a glance" whether the pictures are possibly real or definitely fake.
Whether it's 10:90 or 1:99 is immaterial. It just amazes me how many times I read posts where the poster really believes he's going to meet one of the "cuties" he sees in the adverts .... he won't ..... they're fake, fake, fake.
Agree it is totally immaterial.
If you're a complete nonce heading to a VS ad for an Oriental honey expecting to meet what you see then you deserve every disappointment and lack of emission that you get. The Chinese (incl. N Korean, "Japanese") SP marketing ploy is over a decade old, pre-dating VS, it serves the punter who's after the services not the window dressing. Thais are more showy as their culture seems to be more accepting (less hostile) to SPs so their ads will likely feature the woman you meet BUT increasingly so heavily photoshopped that it might as well be a B&S.
Any UKPer who has paid attention to what's been said and found about Orientals here on this site should have ZERO illusions about playing in that part of the market.
Latinas and "Romanians" (incl Albanians, Bulgarians) also need to be played cautiously regardless of what site they're listed on.
The fact that VS (and other classified sites) don't vet their advertisers as much as AW (note I don't say thoroughly) just means that it's more accessible to amateurs, low-rent operators (whatever their motives and commitment to serve) and desperates. Any smart punter will exert the appropriate caution and expectation when trying SPs on these sites. It's the difference between poker players and slot machine yankers in a casino.
Given the decline in looks, services and VFM as well as the number of SPs I'm using more sites now to find prospects to take a punt on not less.