I don't remember where I read this, but if I recall correctly statistically at the grandmaster level white wins ~56% of the time with 1.d4 and ~54% with 1.e4 (due to the power of the Sicilian).
That's a good idea, maybe we are becoming subconciously used to having the white pieces with mate in two, and don't go through as many options while playing with black.
I was wondering if the "White to Play and Win" propagates the belief that if you are playing White you will win. In real life, Black has almost as many chances of playing to win! How about (more) "Black to Play" puzzles?