i think one of the best 1v1 hero is Anti Mage...he can get a vlad o vanguard early game n then burn ur mana by keep haressing u in lane....

another way of winning is by fast pushes...say brood o visage o furion n get meka...

theres always ways to counter....if meepo were choosen...i take high hp hero n get baldemail...let him net n do the poof shit...when u c the animation of poof...on ur blademail.....ouch