I've said it before, I'll say it again;
this is a game. Arithmetic errors happen, and it's silly to assume it's because someone is out to get you.
There's absolutely no bias on Tainted's part. I double-checked the addition (because I hate losing) - found the lack, and pointed it out.
I did it over PM because I knew this would be touchy, and didn't want some kind of public exposition over it.