Originally Posted by 2xMachina
Basically, you're trading your turn for his. And you can do it every 2 turns at best (use WRT, next turn, swift recover+attack, rinse repeat)
If you're trading a ToB standard action for a Charger turn, I'd say that's it's about even. You're just shifting your spotlight to him.
Heck, you could claim the damage the charger does with WRT is yours effectively.
You could also spread it around, and let the party casters double cast.
It kind if also seems like if you have an uber charger in the group the over poweredness doesn't fall directly in your court.