That is because those movesets are the standard, and work best. There are unstandard movesets that do work, but yours don't fall into that category.
No one expects Rock Tomb or Hyper Beam Sceptile/Flygon so yes that is unpredictable, but they both suck so that unpredictableness is for naught.
Also, just because movesets are common, doesn't mean that battles will be easy. Download NB and battle on it, and you'll see how wrong that statement can be.
No one expects Rock Tomb or Hyper Beam Sceptile/Flygon so yes that is unpredictable, but they both suck so that unpredictableness is for naught.
Also, just because movesets are common, doesn't mean that battles will be easy. Download NB and battle on it, and you'll see how wrong that statement can be.