I just can't believe it... Because the game is as it is... a game. If we went as if the game was complete canon and the books were to be ignored, we'd have the marines as brain dead, jumping in front of your sights, imbeciles all the while driving over you without complaint instead of an organized fighting force that held off the Covenant for a quarter of century. If we went by the games, there would be seventy Johnsons (as seen from Halo: CE) fighting for the UNSC. We would've found out how the Chief got off Halo, how he got back to Earth.
What I'm trying to say is, the games may show him flipping a tank, but in real life, is it possible. From the information the books give us, is it possible? From what I've seen and read... I think not.
"Honor? There ain't no honor in this war. The Plasma-Rifles killed it. And if the Plasma-Rifles didn't, then the Wraiths did. If the Wraiths didn't, then the Scarabs sure as hell did."