Overall, I just think agile exposure is a better move. To be honest, I really didn't think about using Wound at all. What are its effects, again? Bleed for some amount of strength for 3 turns and increase damage done by 65%? I think that's it fully upgraded too. I'd say either one is fine. I also like to use Agile exposure in combination with a stun. Agile Exposure is nice as well because it only has a one turn cooldown and I think deals more damage (without DOT added in).
In fact, I used to use Immobilize in the same position but it's a waste of ability points.
But yeah, it's really your choice and either one would probably work.