In all honesty, decisive is a really poor design, which kills player participation in the long run.

Take Arena, at least you have scaling to level 100 making it more "fair" for all involved. Even if you lose the initiative war, you still stand a chance to win.

However in decisive, you don't just get the benefits of higher initiative but also way more difference in power as compared to arena.

If they made decisive with the arena constraints, that would really be awesome i think.