ARAMMMM

I currently have 30,344 takedowns in ARAM and have been Diamond for quite some time, but as for towers destroyed and wins I'm confused. I have 334 towers destroyed and am Platinum and 509 wins and Platinum. Its weird because I'm pretty sure 10,000 takedowns was Diamond but why so much for the other two? I'm 3X Diamond in takedowns but still at Platinum in the other two?

I've also read that it is unconfirmed what amount of wins it takes to get Diamond and that some people think it's 600... I'm pretty damn close if that's the case. :)