At like 55 seconds you see him pre aim a corner that nobody is near, he then also gets too caught up jumping down that he misses the 2 guys just off screen to his right and does not try to lock on when trying to kill them both and dies. IMO if he had hacks, he would have been more aware of those 2 guys in that scenario, with a wallhack he would have seen them earlier.
Ultimately I don't think anything in that clip would satisfy the community that this guy deserves to be banned for a week / forever. He seems to have pretty good map knowledge and spawn knowledge, as for the lag, on his end he may not really experience much, or might be used to playing on higher ping servers. He's certainly got good FPS though since his movement is fairly good.
https://www.youtube.com/watch?v=AAFBJe6EpKk
This guy has played here for years now and in the early days we had many many many hackusations about him, I know for a fact he doesn't hack yet at times I can see why so many others don't believe it.
It's not uncommon to find people who seem too good, alot of people have been nolife-ing CoD for 10+ years, many of them know where people will be, where to look, where to pre-aim and also be able to hear people a mile away. Alas, that is the PC Gaming life.