Battle Moves Question

So, Going Aggro clearly states to not use this move in battle.  If a battle breaks out and my intent is to kill Roark, how do I do this?  Try to Seize (Roark's Life) by Force.  If I roll and choose to get what I wanted to seize does that mean he just automatically dies?

My confusion stems from the sentence under Going Aggro where it says not to use it in a straight up Battle and then in the optional Battle Moves section it says you can have a battle with the existing basic moves, including Going Aggro. 

Oops! The optional battle moves call for a whole different approach to things.

In short: if you're going to resolve the battle in one move, no, use seize by force instead. If you're going to zoom in and play it out, though, yes, do use go aggro as appropriate.

Oh, makes sense.  Thanks Vincent.