they are both excellent for large hoofed game. The 9.3 is the only "medium bore" cartridge other than the .375 H&H approved for dangerous game in many African counties.
I have a Ruger #1 in .35 Whelen that has become my "go to" elk and black bear rifle. The recoil of the Whelen is not that bad, similar to a .300 win mag or hot 45-70. Not near as bad as any .338 magnums. I found a #1 in 9.3x62 last year in Helena, MT and kick myself for not buying it.