I completely agree with what you said, and it was very well said. But... While the win is a stat to be considered last, I do think it can have something to say about a pitcher's competitiveness in certain situations that probably can't be derived from other numbers. Maybe a metric for runners allowed and runs allowed with a 1-run lead, 2-run lead, 1-run deficit and 2-run deficit. Just looking at the overall number of wins may not be so telling, but digging deeper can reveal a pitcher's consistent ability to keep his team close even on days when he might not have his best stuff. But then you're not talking about Wins, you're looking beyond them to find a measure of a player's aptitude, just like when you look at other metrics like you mentioned in the part of the post I snipped.