There's a difference between the ultra-powerful Jewish families who run the world (Rothschilds and whoever else is under cover) and the comparatively 'average' every day Jews who were/weren't in the towers or on the planes, so that isn't really relevant anyway.
So when people say the Jews run everything, it only partially and insignificantly means the high numbers of Jewish bankers etc. They're just pawns, if they're even relevant at all.