it's all very relative.
some people find it harder to play against A than against B, just because their style of play perhaps accentuates your weaknesses. MK/HS are an amazing pair, their accomplishments this year speaks for itself. every player/pair/team has a bogey opponent, in any sport.
Well-said

However, the record of 0-6 is really too much to bear now....it's gonna be 0-7 this week, unless either pair lost early

Kido/Hendra also have never won against Clark/Blair
