We didn't hire him for his Swansea results, we hired him based on what we thought we could achieve with the players we have. Nigel Adkins was fighting Championship relegation with Scunthorpe when we hired him. He was replaced by a man who was 14th in La Liga with Espanyol. There's not a manager in football who hasn't been sacked from somewhere for a string of poor results.
I've no idea what your problem is with getting management from City's academy, they're one of the best in Europe. I don't know how two people constitutes an obsession either.
The point you're missing is that you can't choose results, there is no 'results' based system. Any idiot can sit here and say, "yeah we need to be one of those winning every game 3-0 type teams," but you need a good strategy, properly implemented to get there.