I honestly believe there's a fair incentive for the average player. 5 wins, especially if you get the buffs and get lucky is pretty reasonable for the most part, and the chest piece is pretty awesome.
oh I'm not saying it's not worth it, just saying it will take luck in matchmaking and good friends or else it's a bloodbath. I thought I was decent at pvp (usually in top 3 in most crucible matches) but ToO has shaken my confidence.