Why is mp recovery useless?

By the way, what makes Shockwave fail? o_o *idiot at brawlers*

1. If the map is not flat, expect Shockwave to stop halfway.
2. It's slooow in third job. In 4th job Dragon Strike is stronger, not that much slower than Shockwave in terms of delay, and isn't restricted or pineappleed over by the silly terrain rule.
3. Shockwave is all power, and virtually no versatility (No Corkscrew + Dragon Strike Comboing for example).

That's why Shockwave is fail.