There is one bug Glu will not be able to fixed in PVP, which makes advantages to some bad players want to win a match in PVP. After taking a litle HP from opponents, just double tap home button and there you go. You will be eternity. Don't be afraid of your opponents anymore as no more HP will be taken from yr opponents.
Thanks Glu you let bad players with low gs can win higher gs safely.
Please use this tip to destroy the game everybody.
Regards