Why are Mayer's wins over Kunitsyn always so lopsided?

Can he not handle the big serve? Never saw them play each other, but every result is like 6-1, 6-0 or something.

go mayer :D

2007

ATP Masters Series Indian Wells CA, U.S.A.
Hard
R128
Mayer 6-1 6-2

2007Delray Beach FL, U.S.A.
Hard
Mayer 6-1 6-3

and today 1 and 0, pathetic for kunitsyn, I have rarely seen Kunitsyn play so dont know why he struggle so much against mayer...

Kunitsyn is a bad tennis player outside of the motherland.

in that case it would be interesting to see what the score would be if they played in russia