if you watch real porn casting videos ( as opposed to casting STYLE videos ) it quickly becomes apparent that, despite what you would imagine, girls in porn are actually selected primarily on their acting ability, and NOT physical characteristics.

the girls in the casting videos are mostly hot enough, but most of them just lay there like a dead whale, not even moaning let alone doing anything interesting.

maybe acting was a strong word. but what porn producers want is a girl that likes to flirt with the camera, make noise and at least tries to fake her orgasm.

most girls in casting are none of the above and thus never make it past such casting videos.

in other words casting isn't merely a trick for some guy to fuck hot girls, but they actually do separate the wheat from the chaff.

it should be pretty obvious from a casting video which girl is going to make it and which one not, and it's not down to the looks at all.