The shockwave didn't topple anything, quit lying. It didn't collapse just a part of it was destroyed and they had to fly over a thousand feat to do so. Plus it wasn't even a PUNCH. The shockwaves from their punches don't even come close to HB and Hulks. Faora and Supes were slugging it out in an iHop with even more people who were even closer to them then the people in the scene with HB and Hulk and they were completely fine:
Hulk's shockwave punch>>>>>>>>MoS shockwave punches.
So if Hulk's punch is a baby shockwave, the Kryptonian's are still in the embryo.