There's presently a blitz player who uses an uber-BVE'd Mandel with the 12-inch duals to rape blitz rooms. I'm fairly convinced he 'also' used auto (without exception .. landing shells right around the target every time where even the 'best' manual-aimers would lag through their intended angles once in a while). Auto-lines can, however, cross during a turn and he tries to exploit this to 'prove' he's manual. Similarly, auto-guns can also appear to fire in opposite directions by simply switching your aim rapidly from one side of the ship to the other. He also tried to exploit this to 'prove' he was using manual, although with manual these directions of opposite fire are visibly inconsistent (wobbling about the axis of the ship, whereas with manual they would be consistent).