Its compact , Its accurate , His has a better stock I'm thinking , both can benifit from a suppressor as both recoil reduction and accuracy can be a benifit along with shooting less hearing protection. So its good for hunting in a blind, its easy to have in a truck, its good at the range ( less bbl less time to screw up the shot ) and the list goes on.
Unless you use subsonic ammunition, it will not be quiet, it will be quite loud. So much for shooting quietly. If you want it quiet, you need subsonic loads of 220 grain bullets at 1050 FPS, shot from a 1:8" twist barrel. Choose the bullet carefully, most don't open at that velocity. Yes, it's compact, but it also seems heavy with that short heavy barrel, so it would be a dedicated rifle for shooting from a rest, not quite the best balance for shooting from realistic field hunting positions, and slightly on the heavy side.
As far as increasing accuracy with a sound suppressor, it's probably insignificant in an already accurate rifle. Yes, shorter barrels are stiffer, may be more accurate than longer tubes. Why a rifle in the truck? Reminds me of a dude who got a fractured skull and a severely bruised face when he flipped the truck and a rifle and a shotgun fell on his head. Otherwise he was a nice guy.
Let's just say it's a big boys toy. Paint and plastic? Beauty is certainly in the eye of the beholder. Enjoy.