Every company has is own filming style, different actors, locations etc...
Legalporno stuff is just circus porn, they start with anal, dp, gangbang triple penetration and then eventually pissing and more extreme disgusting stuff if the model didn't already retire. And most of them are unconfortable or in pain during the scene.
The Hayek twins for example could have been superstars, instead we have a bunch of scenes when they are fucked mechanically like sex dolls and they don't enjoy it at all. Their career and filmography compared to the one of other twins like Whitney and Britney Stevens is miserable.