Board Thread:Questions and Answers/@comment-26064296-20150710143900/@comment-5290299-20150724235027

Actually her ability surpasses the Geass. Though the only restriction seems to be the power doesn't work on those stronger than Asuka or whom are strong willed....so at the same time it is weaker and stronger than the Geass. But the true reason for this is because Asuka's power isn't meant to take control but to give power. Asuka, while unsure of how her gift worked when she first found out about it, assumed it was meant to ontrol people and so the Gift morphed into that.

But now that she knows the gift is actually to be used to strengthen people and Gifts Asuka is trying to steer the Gift towards the support direction. She can still have control over people and objects and other things like the birds and tree branches that she used to capture Galdo, but she is trying to possess the power to control other gifts, and this could mean any gift....so long as it survives the power up it is given through her.