Actually, there is a lot of strategy involved in pvp. It's not quite like organizing your men to attack a base but you do have to think on your toes if you don't want to run back to your corpse. Every class has a weakness, every talent build has a flaw. It's your job to exploit those weaknesses and kill your opponent before he kills you.

Take a rogue for example. As a paladin, my job is to conserve my mana and survive a beating then stike back when the enemy is exhausted. A rogue will blow his cooldowns trying to take you down before you have a chance to attack but after the initial strike he has nothing left.

Or a druid perhaps. This is a completely different story. You can't outlast a druid because they will edge you out and outlast your mana pool. You will have to strike hard with everything you have and interrupt all spell casts.

World pvp is all about strategy, so long as it's a fair fight; otherwise it's just murder.

The battlegrounds kind of enforce it to attain anything (winning), which makes it completely different from the natural worldly PVP.

Strategy is completely optional otherwise.
It doesn't matter what situation you're in.
You can just run up to people and start attacking them if you want to.

There CAN be strategy involved in PVP, but there doesn't have to be, and that's what makes it different.

So in other words, PVP is not all about strategy.
In fact, by pure definition of the words, PVP is all about just ENGAGING other players.

Hey Cyberhound, you're in the same battlegroup as me! =p