Splits while playing white vs black

I was just wondering what are reasonable white/black splits. I really only play daily games anymore, and I feel like I am a pretty strong player as white and a very mediocre player as black. I know that's not unusual to play better with white, but I feel like I am an entirely different player. With white, I am actually able to pull out some wins even against players rated 100-150 higher than me. With black, I feel like I make blunders that I don't ever make with white. Because I do a lot of club matches where I play one game as white and one game as black against the same player, I have equal number of games with roughly equal strength of opponent with white as I do with black. My win percentage as black is 42%, so it's not like I am always losing, but with white my win percentage is 67%. Is this type of split typical?