Huh? Sony's SLT series is 10FPS or faster now.
Personally, I almost never shoot burst (actually, in 2004, I did a client shoot using burst, but that's an exception). I think of it like the assault rifles in the military. One shot is accurate. Seven all miss. But I do see it being useful in some situations, so it's not an invalid point. 10FPS is the new "top end" standard. It used to be 8FPS ever since the Nikon F5 came out in the mid 1990s. (before that it was 5FPS from the Nikon F4).
But the shutter lag is huge for sports and action, as well as general "feel".
The 37ms shutter lag of the D2H has never been beat on any camera. Not on the F6, not on the D3 or D4, not on the 1DMk4.
Sure, it's partially because it was the last pro-grade camera using a 1.5x crop, but it's still noticeable to me when I pick up and use my old D2H.
The D700 and Canon 1D series are in the 70ms range and the D4 is in the low 40ms range. Still great, but the best Sony cameras are in the ~120-140ms range and apparently vary noticeably from one body to another (not sure why). Of course, the 5dMkII was a notably slow camera and was almost 200ms shutter lag, which is *terrible* if you were a shooting competitive sports, for example.
But, for many things, it's probably just fine. It just doesn't "feel" quite as quick. I hate to be the guy that goes on feel, but I've just gotten so used to one speed, and going back feels like it's covered in maple syrup! :-D
Still good cameras, no doubt. Honestly, lens (and flash) selection is still the biggest thing to me, but the others also mattered when comparing the "in my hands" feel when I tried out the Sony.