Spawn Comet (RB, , , , LB, , , , , RB) vs Spawn Duster (, , RB, RB, RB, , , , , , LB, LB)

Compare Spawn Comet (RB, , , , LB, , , , , RB) and Spawn Duster (, , RB, RB, RB, , , , , , LB, LB) — stats, differences, and which is better for your build.