Which 1 Ton SRW Diesel Truck Has Highest Payload???

I just ordered a 2018 Ram 3500 SRW, 2WD, CC, LB, Laramie, 5th prep, air assist suspension, bucket seats yesterday. GVW of 12,000, Payload listed at over 4K. We shall see if that is true when delivered. I shopped the other two and was not impressed with either the dealer or the truck. I looked at a Chevy 3500 dully, CC, long bed on a lot that had a payload sticker on the door of only 2700#. Go figure.