I never said he didn't need improvement, all I said that it's still a viable class if you know how to handle it. I can kill invinci and walker on my apu about 30% of the time, on my spy and tank that's maybe 5%. The only weapon I can't fight my apu against is the AK, since it's such a fucking easy weapon to aim, and u get so many chances to hit (and almost no piercing resists/armour on an apu).
all of immune have made apu's in the past few years, and against equal numbers we can still easily win opfights.
APU's need improvement, but they are far from useless.