User blog comment:Zerazx/Woe the Calamity of Mana/@comment-11616642-20140110020958/@comment-5565260-20140111203736

Yes, but this already happens with different champion matchups, and that's why the mana drained at early stages is very low. 1-5%  mana drain is at most 5 -25 mana in early game, which is regenerated in a few seconds, plus it can be easily countered by a lane swap.