We discussed the blowing up moon feat in the Hayabusa vs Hiryu thread and it became generally accepted that the moon was destroyed while Hiryu and his nemesis(name skipping my mind right now) were fighitng and that it was destroyed under Hiryu's nemesis' power, not by Hiryu's.
True being in such a fight is impressive, but there's no need to overhype the feat to such ridiculous levels.