It's worse than the 360 controller. The shape and size are not good and a step back in terms of cramping my hand. The bumpers are bad. But the real killer are the analog sticks. I think I actually prefer the old dual-shock sticks over these things. They're really bad.
I was hoping for a step up and was going to bring it over to my PC. After using it a few days I'm definitely sticking with 360 controllers on the PC.