No, if you read their technical paper, it's frequentist sequential testing with false discovery rate control, which is a fairly recent development (I mean, 25 years old is pretty new in statistics).
http://pages.optimizely.com/rs/optimizely/images/stats_engin...
I think all OP is trying to point out is that it either agrees with bayesian methods or it's wrong... so at best it's not materially new, and at worst it's using questionable assumptions.
Re:Optimizely Statistics Engine
by GFK_of_xmaspast on Tuesday January 20, 2015 @11:18PM
(#8921420)
"it either agrees with bayesian methods or it's wrong"
This kind of faith-based statistics is pure ideology.
Not trying to pick a fight, just as a statistitian/ML developer I've seen the same things be reinvented and renamed so many times.