Rogue/mage an easy comp for 2.5k? What the hell have you been smoking? Even Akrioss the rogue hero says mage/rogue is at it's worst state through all the time he has played it and he feels it's not completely viable anymore. In our realm we've this very skilled mage/rogue team that struggles to get 2.3k this season since the comp is really just that bad, half the teams you meet counter you and you can lose to keyboard turning clickers no matter how good you play the game yourself.
And no, I don't play M/R, although I did play it to 2.3k+ in s5 and it was a hell of a struggle back then aswell....
The comp is probably annoying to lose against cause "they have so much burst" and "omgwtfop cc chains". That just doesn't mean the comp is actually good, most of the time you gain wins from the other team's very obvious and stupid mistakes.