Riot, you need to play your game more...
What in the world are you thinking, mixing dynamic 5 rank with dynamic 2 rank? I mean, have you played your game? Like, did you really play your game? How in the world would you think that playing as 2 is the same as playing as 5. It makes absolutely NO sense. We used to have both features, duo queue vs rank5 and both of those were ("are" and if you think that changing the name to Dynamic makes a difference then I really do not know what you are doing...) REALLY REALLY different games. I mean, did you even play one game in both? How in the world can ONE SINGLE rank be reflected by both of these? If you keep on winning/losing Dynamic 5, it should NOT be reflected on your Dynamic 2 and vice versa.
I get what you are trying to do, you want to put fruits with fruits. But for god's sake, you have different kind of gruits, you can not compare apples with bananas...