Plarium I agree that this requirement should be moved further up as it may be too hard for people to do other challenges.

Players power is just a general indication of how far advanced a player may be. If you go in arena first it is not that important really. 

Consider this team power of 180k. 

I do 50% Def down, then attack. It is like fighting with a team with a half of that defence. 

Think of your opponents in arena in terms of who is going to go first. If you do you should generally win, if you don't you may still not have the right heroes and gear. 

majority of games of pvp related missions/quests

and arena is a pretty forgiving place

u can great a budget burst comp

the reason is easy.

I'll agree with that. Also a turn based pvp game like this does also does tend to be the fastest person wins on matches of equal strength so the only way to truly win would to be fastest or just fight weaker people. Not really a good pvp system