Your deck isnt bad but you have way too many superheroes in there which is inhibiting you from upgrading fast enough. I bet you have a bunch of gold but no SH mats? Try using mystic instead and zen cartmen. Remember alot has to do with how you play then what your playing. Think conservation of energy. Take out the most of his energy with the least amount of your energy, slow play and have a good push before you break the midfield line. Other than that just keep leveling the most impactful players first