Again, I really don't want to debate the tactical realism of the show because that's just dumb, but Sword Art Online is obviously a very simple game for one reason - if it were even remotely taxing it would kill absolutely everyone playing it in short time. Like just think for a few seconds. If you had to be a real life black belt in jiujitsu to advance in the game, everyone playing it would already be dead. To go back to WoW, even the absolute simplest bosses are usually complicated enough to require a wipe or two when an unexpected mechanic rears its head. The difference in SAO is you can't watch a Youtube video, wipe a few times or ask the #1 guild for their strat. Everything has to be simple enough to be understood and defeated on the very first attempt.