I'd assume some degree of different in the (former) mirror classes in intentional. If they were truly mirrors, with exactly the same mechanic affects, there'd be no reason to retain both as Combat Styles. There needs ti be just that littel bit of difference, especially in the tech styles.

What ever happened to Life Ward? It's the Heroic Tier combat proficient that adds minor healing to Force Armor, Barrier, and Enduring Bastion. It's one of my favorite addons for my Telekinetic Sage.