Did some reading just to make sure that there wasn't an issue with diminishing returns. According to http://www.wowwiki.com/Diminishing_Returns, the timer is just 15 seconds for things like fear before you are out of the diminishing returns window. So what we see in the video should be a valid test.

No complaints about the test or how it was carried out, but what just doesn't sit right for me is that with staggered totems down almost every fear was dispelled so fast that none of the shammies even flinched, except once where one toon on the right simply turned away and the last fear where they ran for at least a fraction of a second like I would at least expect. I suppose chance also says he may have simply feared at the exact moment a totem pulsed, but it seems like the fears are breaking faster than they realistically should.

Either way, this seems to be the proof we need to say that staggering tremors has a definite advantage. Thanks for doing the legwork.