From: No Lifer
I think one of the defining factors of being a [full] robot is artificial intelligence, since this "robot" isn't using that, it wouldn't be breaking the rules.
E: if it was cloned (botfarm) then yeah I believe detection would be possible.
In this hypothetical, the controller for the bot is an actual human brain. Cloned or not, it wouldn't be detectable, because really, it's more of a cyborg than a robot. Assuming that the robot was a completely realised AI, it would be capable of simulating human imperfection and, in my opinion, still be undetectable
In both scenarios (AI vs cyborg), we're not botting in a procedural way with a script, we're using an advanced intelligence to play the game for us.