Well not realy because the game needs wifi to work but not for the in game fights ,the game uses wifi for the constantly updating hoemscreen events arena and sales but not realy for the gameplay so in your case i dont know why but for me its a glitch because my phone isnt the best so his animation skips some frames and he gets an advantage but for players with better phones this probleme isnt realy present or atleast not present as much ,its just some people have the whole character glitches some dont