I'm inexperienced, but being unpredictable can work in your advantage at times. Using UU/NU pokemon in OU or using unique sets for an example, throws people off who are used to seeing only OU. It depends on how you use them. A big part of battling is prediction: I think this is the most important element in fact. Merely having the right counters and stuff don't help if you can't predict. There's so many elements. Want to have a test battle?