you all are using that kinetic energy way to much, lets put it like this, he has a force field, hes not surrounded in fire like human forch. Superman cant blow out something that has never been lit. thats is just stopping cannonball from absorbing the impact, thats all it is doing. cannonball wasnt created to be rogue or parasite, he was created and known for the man that once in flight nothing can harm him, not even ice. Like every mutant he tapped into new powers and has mastered them, he can turn them off and he can turn the on. But when he is in flight trust me he is invulnerable.