At least with Ginza C and E, the physical descriptions (NOT including the age) in both the shop websites and also bro Rooter's ARs are usually quite accurate. I only rely on those to determine which girls I would like from the body shape perspective... The photos are just some nice eye-candy to get me horny, lol!
In fact when I'm in the shop waiting for my booking, I usually break out the shop website to ogle at some of the girl pics to warm up the engine. That, or some good quality porn from pornhub.