I don't understand the confusion. It is unranked. It is literally the only place a guy can go to practice a hero he's not used to playing outside of a controlled environment (bots). You want to WIN? Go play ranked. People want to HAVE FUN (which doesn't always equate winning).
I for one enjoy playing widowmaker and give less than 2 rats asses if i'm getting counterpicked. Do you know why? Because I like being a sniper. It's also fun to be able to outplay a counter and I take it as a little extra challenge for my fun. This is why I play unranked, because I understand my playstyle might conflict with actually winning the game.
I find it even funnier when someone complains (usually they're rare in my teams) that i'm sticking to one character. Normally it's someone crying like their lives are at stake. This isn't MLG, man. Go have fun. If your fun is winning, then EXCLUSIVELY play ranked. You know, where people care.