I also had issues figuring it out. i'm just upsetwith a few aspects now:

-now a 3-WS combo deals less dmg than a single WS used to...
-You can't really use AoEs when you need them because one is upon parrying and the other requires 3000 TP.

I wish 3000 TP WSs at least dealt a decent amount of dmg even if not comboed.