[Thor]

Doesn't affect your power level. I just went from X to none and I still get crappy xp even if all players do more damage and hit me more often than before.

You won't see much difference with only 1 but going from none to say 5, you will see a decent improve in your performances in pvp battle.

I never paid much attention to that detail but knowing Zen and reading it today, it says it affects when "performing a pvp attack", so it must not apply to when you get attacked I guess?

Doesn't affect gang war at all.