Marine level
Aiming: Bronze
Movement: Bronze
ODST
Aiming: Low Gold
Movement: Bronze
Spartan
Aiming: High Diamond
Movement: Silver
Tweaks need to be made to the movement of bots. One would rather have a bad teammate or no teammate instead of an ODST bot. Expect the ODST bot to go 1 and 10+. In slayer, this decides who wins the game. Spartan bots have yet to be added to matchmaking, but they can be played in customs and their shot is very good, perhaps too good for matchmaking.
ODST bots should see a slight increase to aiming and a huge increase to movement in order to make them a viable teammate that you can work with.