We get it. You like your $1000 worth of graphics cards and you want to defend them--no worries, we won't criticize you for that. I won't criticize someone for spending their hard earned money on whatever the hell they want, and I'm glad that you can max C2 with tessellation and all the candy turned on--people SHOULD be able to. But that's completely beside the point of what was wrong with a lot of the ways crysis 2 dev's implemented tessellation. It's like MS having a script running in the background of a Word document that loops your CPU over and over just to max it out, but doesn't do anything. It's worthless, unnecessary calculations, just like rendering tessellation for water frames when there's no water in a scene...
But either way, the reason it was done sloppily (or at least, very likely the reason) was that it was rushed out the door post-release to appease all the people going "waaaa, why no DX11". I'm mildly surprised they added tessellation at all.
I suppose beggars can be choosers.