This is old, and simply states without pointing to any testing, but... I can't help shake the feeling that they are indeed different effects. I was still totally off with the SSS suggestion though, because that's a frost effect too. So yeah, I don't see great potential for this item with the current end-game monk builds that are being used.
And easy way for you to test it is to try it with a couple of freeze abilities (to confirm that it doesn't work with frozen enemies) and then with abilities that specifically stun.