Yellow and Green are similar, but Yellow has powers, and one of Red’s pokemon. With these two things she can win. This is the end of the mini arc, but it lasted and that’s what counts. Yellow ends on a high note. Yellow wins.
Aside from Red, Blue seems to be unbeatable. No one can stop him when he puts his heart into it. Of course Green is also a trainer, but her skills just don’t match up in the end. Blue gets himself a win. Blue wins.
Green may be a Trainer, but she has no shot against Red. Not only is Red a great trainer, but he also tutored legends like Gold and these kids who appeared in one chapter and never appeared again. Green drops….for now. Red wins.