Captain Marvel gets her indestructible ability from her awakening which can be valuable, while AA-ron gains the ability to block regeneration and reduce ability accuracy with Neuro-toxins - so it doesn't affect his damage output, but it does help his utility. The best champion to awaken is arguably Nick Fury, though honourable mention to Hyperion.From your lot I'd say AA-ron.
@CookinEwoks he means AA - Archangel
Aa, he works at sig 1