Just quickly
It notes in panel that the thunderclap is made more powerful due to them being underwater which is... bizarre, but special circumstances at best then as far as the power behind it.Hulk actually manages to make an amped Attuma feel it with a thunderclap on a day he is lol noping and casually stomping Hulk and Namor at the same time. This one is rare in that it acknowledges that it hurts Hulk too
https://s10.postimg.org/5zjrmhpy1/image.jpg
https://s10.postimg.org/ncu21csyx/image.jpg