After reading Banes comments, I made some adjustments on a number of characters. Mainly, I adjusted their power totals downwards. I also did a little tweak like combining Batman's martial arts and batarang into one listed power. I also combined the Joker's various attacks into one power. That way it's not confusing, since both do Mundane damage. I also had the LIFE scores wrong on a couple heroes, so I fixed them as well.
Green Lantern, The Flash,and Wildcat are still very tough, but they should be. I trimmed one or two points from each.
When I do Superman, he'll probably have seven upgrades, for Flight, Invulnerability, and Super Strength. But he is Superman, after all.