ShadowCollector
[05] Battler
Just to slide this in here, the specific derogatory term for low tier heroes who get a superiority complex over playing/winning/losing with low tiers is "Tier Martyr".
I feel like a Tier Martyr when I beat Amy with Rock and I'm proud of it Idle.
That's the thing about purposely picking low-tier: you're NOT doing yourself any favors, and you know it. It's the entire point of it. You're pitting yourself in a disadvantageous situation (learning to deal with bad matchups usually, sometimes with how to defend with overpowered shenanigans as well) to see how you will overcome it. The idea is not much different than lifting weights, and can be just as frustrating, painful, and infuriating (or impossible, like putting too much weight that you can't possibly lift on a rack), but like how your body increases muscle, your mind becomes sharper and less resilient to tactics that others find difficult/impossible to deal with.
Reminds me of PT with the Master Sergeant when I was stationed at Fort Campbell.
All aside, I agree with what you said. I enjoy picking Low tiers and even If I lose I don't necessarily blame the guy who beat me, but my own weakness/reflexes/etc. That being said I agree with the advantages of picking a low tier as it makes you more "Defensive" and forces you to play and think outside the box in match-ups.
I enjoy picking Low tiers in any fighting game (Yoshimitsu/Zafina in tekken 6, Felicia/Chris/Hsien-ko in MvC3, Hakumen/Tager in BBCS2, Sheeva in MK, etc.) and the results of winning feel much more satisfying and gratifying when you win.