i gotta go with 3rd on this, his speed allows him to get in range during that 5sec gap, also assuming he is smart like naruto he will take a few out with the air current following his punches or kicks, also most of the peins techniques would probably be almost useless against that impossible defense he has. Not to even mention that nifty little lightning needle would decimate any of them he touched. Besides, with his speed whose to say he couldnt still land hits? When naruto faught he was fast but wasnt using anything like flash step or whatever so his moves were still telegraphed, the 3rd raikage moved so fast it was almost an instantaneous teleport making it less likely they could keep up.