[artemiscorso]

Something to consider is the way that some powers add exponential value to each other. For example double attack is much more valuable to someone with a move/range of 6 and flying than it would be to someone with a move of 5 range of 1. It allows you board control and flexibility of strategy much more than a double attack of 4 range 1 would. Also defense and offense kind of build on each other. For much of the game Spider-Man's defense can be largely ignored because he has a single attack of 4. Captain America and Iron Man with multiple attacks of 4 are a more pressing concern. In effect their offense makes their defense more valuable. Think of it this way; each turn Spider-Man survives you get an extra turn of 1 attack of 4. Each turn Captain America survives you get an extra turn of 1 attack of 6, or possibly 3 attacks of 4. Giving someone who has an attack of 2 an extra defense die each turn is not worth the same as giving someone who has an attack of 5 an extra defense die each turn.