Recovery 7200 hp per sec in pvp

Hi everyone!

Game server : tahabata
game nickname "Godking"

During pvp on arena of discipline - gladiator was restored on full hp several times . how ? i send screenshots but i have an video also.

Edit by Isobel: Name shaming

Quote from AionRetailFanGirl99

Full heal pots from arena?

1) Arena potions doesnt works on arena (it sounds funny but its true)

2) greater arena potions healing max. 3800 hp (like as AP potions), but not 7200

3) This guy restors like that 3 times during arena pvp (its not 5min CD)

So , main question : if isnt a bug= HOW it works ?