Why are the req levels so different?

Games Halo 5: Guardians
1

So in the Video I have a higher player score but half the req level as the person I was killed by

The whole game my team was behind cause we had the req disadvantage. Why is req levelling so inconsistent?

2

There’s a possibility that he got it out of a Random Vehicle card. I got a Hannibal Mantis out of a Random Rare Vehicle once.

3

> 2535437652903765;2:
> There’s a possibility that he got it out of a Random Vehicle card. I got a Hannibal Mantis out of a Random Rare Vehicle once.

The rest of the game was pretty much the same. I couldn’t req any thing to keep up.