I say this as someone who likes and has played 4e and who likes and playes World of Warcraft. 4e suckered World of Warcraft into a dark alley, mugged it and rifled through its pockets for spare mechanics. The encounters based design, the use of class based powers to attack "I use my Sinister Strike, er, Sly Flourish!", the emphasis on settings based fights with unique mechanics, the emphasis on builds, balance, and uniform mechanical structer...here I'm referring to the way your characters generally reset to the default power level, how at X level, you'll always have Y number of powers, etc. 4e was an attempt to take many of the best parts of running an instance in WoW or Everquest and translating them to the tabletop. Yes, there's a lot of differences, but there's a whole heck of a lot of similarities.
And a whole lot of people felt that this was a bad idea (I am not necessarily one of them). You may not agree with them. You may think the similarities are smaller than the differences. That's all fine. But they have a legitimate point of view, and just because you don't like hearing it shouldn't mean they should be forced not to speak of it.
4e borrows/rips off WoW. That's either good, bad, or indifferent, but it's not a catchphrase.
Sorry, not seeing it, and I've been playing WoW for 7 years or so, give or take.
In WoW, combat is about rotations or priorities, a constant stream of healing, tanking and repetitive tactics.
It also features different kinds of resource management depending on your class ( rage for warriors, energy for rogues, focus for hunters and mana for casters, which was kind of a big deal when the game launched ).
In 4e, encounter powers were introduced so that you
didn't have to do the same thing every round; healing was capped ( healing surges ) so that healbots weren't necessary anymore and everyone was given the exact same resources to manage, and the game tried to encourage everyone, both players and DMs, to use varied, creative tactics to win the day.
Also, they tried to cut back the amount and importance of magic items, whereas in WoW ( and just about every other MMO out there, really ) getting new, better stuff is pretty much the point of the game.
So, IMHO, the similarities between WoW and 4e start and end with "all PCs get powers!", but then just about every game out there features special abilities these days.
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As for the OP: sorry dude, but you set yourself up for disappointment here.
Still, the playtest should be free, so it's not like checking out the game will do much harm, will it?