No, it is not easy to see what's best. Comparing a spot welded, thin wall open box to a thick wall tubular connector is not obvious, if you understand how those are loaded.
As I have said before, unless you're going to do a full finite element analysis, which type is stronger is a wild *** guess. It's a guess for me, and I have structural engineering and materials science education. So whether you admit it or not, you're just guessing. You've got no idea which is actually stronger.