Just because you are a whale that doesn't mean the rest of us are.

By using power instead of level, this would ensure everyone is fighting on an equal level, or more equal at least.

I don't know what games you play, but in most games when it comes to PvP, PvP is almost always oriented around the skill of the user and not the amount of money he's put in.

Obviously this is a P2W game so that does change the situation, but what is the point of someone 150k power fighting anyone below 140k? It's an automatic win. I wouldn't call that PvP.