Well, it's common sense to me now to use those that already appear to be the best. What I'm looking at is the skill playing level. Everyone has a different style in playing RO. In many cases, some styles are better than the other.
Basically, I'm not saying you shouldn't use Hydra cards because majority of the players use it, but that if you have to rely on a certain class skill such as Acid demonstration just to prove how great you are, then you aren't that great.
And "not use" is another meaning, I meant "not to rely on".
You can still use it, just don't rely on it to make you look pro because many can do the same. What most can't do once again is how you play. And by playing style, I mean how you kill, how you pot, how you spend your SP, how you retreat, how you click, how you react, how you hide, how you locate yourself, how you use your skills, how you combo, how you make use of teamwork and such.
But this also works I suppose, I don't really care that much for the skill playing level of others.
"if you have skill you'll succeed on any class, regardless of skills like EDP or Frenzy"
I'm starting to confuse myself anyways. We'll just leave it as that. It's much simpler.