Thanks for taking the time to explain it, Mike. As I said, it doesn't really matter to me. I notice when a scene is out of sequence, but it doesn't bother me in the slightest. So I was struggling to understand why it mattered so much to so many people. But I get that the sequence is as important to the 'reality' aspect for many people as some other nuances are to me.
For example:
It really helps me get into the scene when one or both of the guys at least appears to enjoy it more than he thought he would. It's also a big turn on when the guy doing the servicing actually gets in between the other guys legs while he's doing it instead of leaning in from the side. (I couldn't tell you exactly why, but it is and they so rarely do that on here.) And I really wish they would show some sixty-nining scenes every once in a while.
So now that I've come down off my soap box, lol, let me just say that your explanation helps me to understand that it's the subtleties that make the difference when watching these scenes. After all, 90% of sex happens in the head between your shoulders and not the one between your legs.