No for aimfix, I see no signs of aimfix only the user spiking in the replays causing irregularities in his shot regions.

No for ESP, I can't see what you are seeing, the type of TDM you're presenting us with meaning vast amount of players playing makes finding players easy, you can follow your own team's play through the walls, listen for there shots to determine if they are in combat with someone or not to determine if there's an enemy is there which I belive him to be doing, not to mention there's also a clan member present aswell who he runs to countless of times which suggest to me there's communication happening between the team mates which his placed on.

Overall I believe the user to be legit. However other GM's may disagree.