You're willfully blind. Either that or you don't know anything about mechanics, unless you consider Asimo to be better engineered. (That's a joke, but I'm guessing that I have to spell things out for you). There is no mechanical device that even remotely compares to the human musculo-skeletal system. It's a staggeringly complex system, considered solely from a mechanical perspective. Ask any mechanical engineer.
There is no robot that has the range of motion and reliability and which can perform such a wide variety of tasks (walk, swim, climb, throw, sculpt, push, pull, etc.) under a wide range of conditions (heat, cold, rain, snow, etc.), fueled only by meat and vegetation, with very little maintenance.
It's staggeringly complex. It's pretty obvious that the engineer chose some really bad places to insert unnecessary complexity.
Two words: "veriform appendix." No self-respecting engineer would include such a subsystem that (a) performs no useful function and (b) readily becomes a hazard to the entire system's function, unless he was getting a kickback from the AMA. Not that long ago, inflammation of the appendix was guaranteed to be fatal.
Next, the bladder. Did you know that the first thing you should do in a fight is urinate in your pants? That's because if you don't, one solid kick to the lower torso will rupture what is essentially a water balloon full of lethal poison. When I was a cop, I responded to two traffic accidents where one of the involved drivers should have lived, because they wore their seat belts like they were supposed to--except that their bladder ruptured and they went toxic. There are other plausible methods for dumping waste out of the body that would work better.
Finally, I notice that you deleted the prime criteria: that the engineer would then brag about having done so. Other engineers would laugh at him. Mercilessly.