Re: I have seen the future....
One also has to make the distinction between CPU based and GPU based physics,since PhysX can run on the CPU as well,if the user doesn't have a video card that supports GPU based physX,and the game itself needs specific support for GPU based physX.
So under those circumstances,the total amount of games supporting GPU based physX drops to about 10 games over the last 2 years,so it's hardly impressive in that sense.
I really don't care about differences between PhysX,havok,bullet as long as all 3 run on CPU's,as they're pretty similar when it comes to overall capabilities,and it comes down to which one uses less CPU power for a given effect which decides the best one,and even then,it depends on the game itself and what type of effects have the developers planned for it.
Lots of variables come into it basically.