They do have a traction control thing which prevent spinning in 2WD. I'm wondering if/what it does for the front axle when in 4WD.... hmmmm.
I've never felt "traction control" kick in on the front axle when in 4WD in my truck. It DOES have a pretty aggressive stability control program that I've felt fighting (and winning) to keep the rig from fishtailing or spinning out. Since in true 4WD, both front and rear are tied together at the transfer case, and with all the weight up front, it would have to be pretty ugly to have the front totally lose traction. I have had one front spin while climbing loose hills and sand dunes, but in the PW, I can just activate the locker(s). Regarding the stability program, I have to remember to not just "dumb it down" but fully shut it off (hold ten seconds and chime) before I try to toss it around off road.
Both the PW and my 1500 both have very tight, nice and effective limited slip rear ends.
The 2500's do not have the "Auto" feature. Only half-tons.
And I too prefer the lever in the floor on the PW, as opposed to the dial on the 1500, though it has never given me any issue in over 100k miles.
Wish they both had manual locking hubs up front too. But, I guess that is something I could do in the aftermarket.
Good luck in your truck selection.