The assumption behind this post, as AnneC touched on, is that higher scores are linearly correlated to what is perceived as a good outcome. Guessing blue every time will guarantee a worst case and best case outcome of 70%; as such, guessing randomly becomes a much better strategy if the player puts a significant premium on scoring, say, 95% or higher. Whether this valuation is rationally justifiable is another question entirely (though an important one).

The same assumption lies behind A Pickup Artist's post. It all depends on your objective: if you want to sleep with as many women as possible, routines are probably the best bet, though likely it depends on your personality. If instead you are looking for deep, meaningful relationships with women, routines may have a place, but natural game will take you further.