Alright!!! You win! Happy? Frankly, I just wanted to prove that the Spartans are far from invincible. Especially in the early years of the war. Mark IV was designed specifically for fighting Insurrectionists, so it was ill-equipped to withstand Covenant weaponry. And your comment about how Mark IV could survive direct hits from the aforementioned weaponry is incorrect. Yes, the operator could potentially survive a hit or two, but the armor? Absolutely not. Structural integrity is completely ruined, EVA capabilities are eliminated, etc. If getting really horribly and irreparably damaged is your definition of surviving, then you may want to rethink it.