Discussing the game is one thing, you were claiming your way of playing within specific conditions to maximise taking advantage of a particular mechanic is superior despite well formed opinions to the contrary and suggestions of situations where your own preferred playstyle is in fact not superior.
The quality of the coding is immaterial, it is a staple of Morrowind and Oblivion both that you could turn your character into a veritable God with the right equipment. Can, not have to. Doing so requires one to go out of their way to break the game mechanics and it is the case in many games that a subsection of those who play it will take every effort to break the game.
A broken restoration spell is a reason for your stealth playstyle to be superior to a destruction mage or a warrior in a narrow corridor when confronted with a mob?
If your claim is that overpowered in multiple circumstances makes a character "the best" then I am sure other posters can come up with several other builds that are equally overpowered in terms of DPS or damage sponging.