Let's compare gameplay to gameplay. Since Marcus defeated Scorge in an actual battle rather than a cutscene let's do the same with Forge versus the Arbiter. Plus we all know ES shattered lore like noone's business in that one cutscene. If it had stuck to the lore Forge would have leapt at the Arbiter.....and have been bitchslapped into the ground. Had Epic done the battle with Scorge the same way, Marcus would have run up to Scorge and slapped him like a 8 year old girl and then boot him in the balls causing him to fall on his own staff.
Ride the Rocket