P.S.: Allegedly he beat tox and h4l in a 2v2 with a team mate that dealt no damage at all.
Yep. Anyone can hit good percentage 2v1 against tox and hal. Seems totally plausible.
he jumps in ways that would totally throw his own aim off at close range, but yet he still maintains some sort of lock.
People who are reliant on their movement to support their aim are not good aimers, they require their movement to maintain control over their crosshair, if you can't move past that limitation you won't ever aim well.