Mass Effect 3 - Testing Armax Arena Enemy Difficulty

Saw on the wiki that armax arena enemies are capped at normal difficulty aside from the strange scores and mirror battle. Decided to do a bit of testing on Cerberus foot soldiers, and found that some enemies seem to have normal difficulty health, while others have insanity difficulty health while on insanity. I always thought my damage seemed inconsistent in the arena, but I never felt like the overall difficulty was dropped, perhaps due to how many enemies there are in a tight space. Feels like they do insanity level damage. Don't quote me on this, but I swear they threw in more low-level enemies after I died and had to start over. Generally inconsistent; sometimes I start and almost every Trooper has low health, in the video round 1 had several high health troopers. I did some minimal testing on Brutes and some of them seemed tankier than others as well. So, there's that for anyone who cares... EDIT: Took another look at the conversation on the wiki and there does seem to be some acknowledgement that the results are inconsistent. Appears to probably be a bug based on coding analysis, but hard to say. Makes me wonder what the arena would feel like on true insanity difficulty...