You can argue all you want that he has bad showings, but he damn well came close to winning the whole thing last year, which backs up my point. And he only lost (just bareful) to a foe who was even immune to mystical attacks. If that doesn't show how dangerous he is than I am not sure what does.
As for SS, if it's a real problem with him than maybe we should drop him too. The only reason he could be in it anyways is that he comes with his passivity, diplomatic nature and high value of life. If that's taken from him than he would probably be too dangerous for the tournament.