Every MMORPG is compared to WoW simply because WoW is the benchmark. It's the game that all other MMO's strive to better. That being said no, runescape is nothing like WoW, all having an action bar in runescape is doing is bringing it up to par with other games.
If you look deep enough, you can say that any MMORPG copied another in some way, shape or form so I don't feel there's any need to rage...