To me, the Case sowbelly does feel 'bigger' in-hand and in-pocket, due to the thick build of the pattern. It's not as long as the Queen Cattle King (3-7/8" vs 4-1/4"), but definitely feels like a 'big' stockman. In part, some of the thickness of it will vary according to handle/cover material; my stag sowbelly (seen in my avatar picture) has fuller, rounder covers on it than others of mine in bone, which tend to be flatter/slimmer, as Case finishes them anyway. I'd assume the yellow Delrin covers will also be relatively thin. And my sowbelly looks almost massive when sitting next to my Schrade 8OT, of the same length.
Regarding height of the sheepsfoot, there's some wiggle-room for adjustment there, if one wishes to file the kick on the sheepsfoot blade. I've already done this to my Cattle King, and there's about 1/8" of leeway to drop the sheepsfoot on my sowbelly, if/when I decide to do that. Sheepsfoot almost always has a lot of open space below the edge, inside the blade well, so most of the wiggle-room will be dictated by how much, or if, the nail nick is/isn't compromised by lowering it.
Edited to add:
For what it's worth, I used a flexible fabric tape measure to (very unscientifically) gauge the 'girth' of each of my T.B. 5339 SS sowbelly (~3" around), Queen #49 ACSB Cattle King (~2-3/4"), and Schrade 8OT (~2-1/2"). I wrapped the tape around the central portion of each knife to include the highest portion of the sheepsfoot's spine on each. I'm sure the factory Queen might've measured a bit bigger, if omitting the aftermarket 'mod' I did to lower it on mine.