It should be used as a inspiration, Say if your on a massive lossing streak, you'd wanna kick start right back into it. Or the same if your on a winning streak, you don't wanna lose. All match types that concern a person will be included in their W/L.
It doesn't matter if you didn't get pinned in a Tag match, or one person was the reason for the loss, If your team loses, you lose. There is no escaping it, no excuses. If you don't want to have losses, best throw out your best performance for you, and your partner. Don't rely on just one person to do all the work for the team. Gotta fight to win, gotta fight to be the best and thats what we do.