The concept that an inferior deck beating a superior deck is an accomplishment is complete fluff. Pretty sure winning Worlds with an Electivire themedeck is a pretty big accomplishment, but no one's doing that. Why not? If the idea is to achieve the most fulfilling victory why not limit yourself completely? You're being selective on a concept you hold so dear, and that's pretty hypocritical. It's like saying one man is more guilty of murder because he's killed more people than the other. Perhaps, but the person who hasn't killed at all is the ideal. So, if your only defense is, "I wanna be flashy when I win worlds, and as such, I make the conscience choice to play decks I view as inferior", why stop there? Why not win with a theme deck?
Sounds to me like you're playing a bad deck so you'll have an excuse when you go 0-x at a tournament besides lack of play skill.