Board Thread:New on Age of Ishtaria Wiki/@comment-25606149-20141031184746/@comment-25602165-20141031193917

The only benefit in maxing both card it that the level will probably be maxed if you evolve it. Say for instance that you have two same 5* cards at base. This means that the max level for both cards is 50. If evolve them after maxing both of them, the resulting level with probably be 60. In other words, it will probably be already capped.

Sad thing is that maxing both card both fusing WILL NOT result in a higher stat at the end. Fusing two 1/50 or two 50/50 will result in the same stats at level 60/60.