From now on:
The the XP is calculated as if the lower level character has beat the higher level character, then the sum of the XP won is multiply by 2, and split between both players in equals shares. Level up bonuses are actives but there are no battles points for each round and no KO bonus.
This should help you levelup your cards quickly, while reducing the problem of "bad players" :)
Man lost room is so gay now way to many noobs who dont know how to play properly just complete waste time even bothering in there now im gettin worse players now then before it was changed its like uber noob caos or ppl with maxed decks always looking for the kill i never met so many bad players in last 2 days then i have in last 2 months of playin least before it was once in blue moon , not every dam person you fight!