Smells eerily similar, with an additional hint of minty freshness
Accounting for most of the frag-appreciating population. I also thought JB smelt like TdH the first time i smelt JB. Not identical, but could be put in the same "class" smell-wise. The earthy citrus/woods accords are TdHish while the mild mint does its part in distracting noses from the TdH similarity. The similarity was the reason i did not buy it. Perhaps if i spent longer testing JB i would arrive at the conclusion that it is not really similar but, sometimes, one only has a very short time to create lasting impressions.
I wore Terre d'Hermes for two years straight (this was before I got into this hobby more extensively) so its olfactory footprint was so deeply ingrained in my nose... that's why I think I couldn't see the similarity--if I were just smelling both for the first couple times or so, I might have had a different impression.