well i don't think the brand you choose defines your skill, the 3 platforms have all types of genres so theyre user base can be good at any game, but i have to say that longtime nintendo gamers tend to have more skill because of the many years playing and the fact that games used to be harder and required more skill.
For example a kid nowadays can beat me in a recent game that i haven´t played an he plays a lot, but give me a couple of days (or even hours) to understand the mechanics and i totally kick ass!! i say it because I've done it many times







