I though Bolster did not work on augments - that is, it did not affect the stats they shared with players, but it turns out I was wrong.
I tested it on Preview - spent a million AD on getting one bolstering companion from epic to legendary, boosting the bolster from 13.5% to 14%.
My augment's Power went from 10.256 to 10277 - an increase of 21 points .. .which with 3x R15 bondings gave me an increase of 65 points.
So, there you have it. It works...it's just pretty much worthless.
Make NWO great again, please....