Yep, sodbusters are just as strong as any other decent quality pocketknife.
Case CV steel is my favorite steel in the world, and I am a big fan of Queen's D2 knives (have a D2 toothpick in my pocket right now).
Either way, you can't go wrong. Both knives will be sturdy, both steels will take and hold a wicked edge.
Also check out the Boker Tree Brand sodbuster, I think they call it a Gaucho. It's got an old-fashioned carbon steel blade, as do most of the Boker slipjoints. Very nice, on a par with the old Schrade carbon steel blades. I'm going to get one of these soon.
Peace.
Alex.