In my second post, with the red highlight, I never mentioned it being an analogy. I did in my first post, but not the second, so don't misread this. >.> But still, simile, analogy, big deal. Point is, he's stating his personal preference. No need to get technical. Also, why does it seem that a lot of people get so hostile? So eager to correct others and to make people see things "they're way" instead of being open to the fact of "hey, perhaps I am wrong/potentially biased." There's nothing wrong with that (note that I am NOT saying that anyone is right or worng about anything, so don't take this out of context, since if I didn't add this bit here, someone most likely would).
Back on topic: MapleStory doesn't have a direct PvP play, but that's just one example (even if it does have one of the largest followings in online gaming). Sure, a lot of games do have PvP, and I'm sure that most would agree that this game must involve PvE to gain money and upgrade cards (upgrading cards is sorta similar to leveling up in an MMO...the more levels you have, the stronger you are. Likewise, the more upgrades you have, the better your deck), as well as PvP to maintain the competetive crowds and allow the free exchange of strategies, as well as a show of strength. I think one of the main concerns here is the uneven match-ups in PvP, or the lack of variety due to the multitudes of Rainbow decks. We could argue this all day, but really, it wouldn't get anything accomplished except to frustrate everyone that believes they're "right" and everyone that disagrees with them is "wrong." =/