I've been testing performance of the Nape physics engine vs the Box2D AS3 and Alchemy ports and it seems like Nape is a lot slower than both of them. I have read in a few places( here and here ) that it is supposed to be faster. Has anyone done testing between the two and if so what were your results?
After talking to the creator of Nape he told me that Nape runs slowly on mobile devices, which is similar to my target device, due to its use of in-lining.