Consistency depends on its definition I guess.
Yes I've had typically winning years other than 06 and 13. I haven't broken it down to winning month but I would assume it's close to 75/25, however the 25 % month that are not winning are typically significantly worse (loss wise) than a normal winning month based on the way I trade. Since this is my money and I don't need to justify decisions, I'm more focused on total returns than consistency so if I see opportunity I will put risk on regardless if it messes up my "winning month or year".
Now to your second statement, you could have a monkey pick stocks the last 5 years and he would have done well (Imagine what that makes me look like when the monkey not only outperforms me in 2013 but I end up with a big loss and the monkey with a ok size gain). Having said that I don't really think that traders appreciate this type of market. Investors love it, fund managers love it but the way I look at trading I want volatility and two sides. I don't mind a strong bull market if it has some minor corrections that let me catch up but if it shoots up straight (like the last couple of years) and doesn't ever pull back it's hard for my trading style to make any money (also that's not a very typical market). So yes, I can't outperform a monkey over the last couple years but I'd take that challenge any day.