The problem is getting into melee range and staying there when they have the speed advantage.  Even if Rath can go charging in, I can't exactly do the same, so he'd be going up against all those griffons with an even lower AC than before.  Not exactly the smart move, even with damage reduction, unless he's specifically been built as a charger in the first place.<br/><br/>Still, I guess it's currently the only available option...