Well guys, good news! I think I figured it out, seems like the game, when you win first place, gives out a random item, but, if said item does not exist (like Helm and Glove before lvl 20), then it will not drop... At lvl 19 you can get that loot, so I assume that 100% blue is at level 19:
I think you are right: Lost the game, but still got first and got the blue. Funny thing is "Match Over: Won". I lost and it says I won, lol. But that is BS... It means the game rewards sloppy play, since usually a good team, with good teamwork, can force a 2 on 1 decision, that means 1000 to 500.