I somewhat doubt that. They're both mostly non-default browsers where they are used (and the places where Firefox is default probably have more technically savvy users than those where Chrome is default), Chrome has far and away more current mindshare and is, therefore, probably more likely to be a crowd-inspired (rather than technically-inspired) choice as a non-default browser. I suspect that there was a time when your statement was true, but I don't think its true now. (Though inertia in both camps may make it true even when its less likely to be true for new users.)
Ask anybody that runs ads and they'll tell you Chrome ranks last in CTR. See also:
Tech savvy isn't the only explanation for CTR differences, especially measured CTR difference; ISTR a while ago discussions of what was possible in Chrome v. Firefox for adblocking, and from that it seemed that Chrome ad blockers would still download (but not show) ads, while Firefox wouldn't download them. Don't know if that understanding was accurate or if it is still the case, but that could conceivably result in Chrome impressions being overstated (and CTR being understated) relative to Firefox.
It helps that Firefox has a lot of brand maturity in non-tech circles, whether it's referred to as "Firefox" or by the names of its ancestors. It also helps that Firefox is the default browser on the vast majority of desktop GNU/Linux distributions (which are gaining some popularity now that Windows XP is unsupported and being phased out more aggressively), though this probably isn't as significant of a factor as the existing brand recognition/maturity.
http://thenextweb.com/apps/2012/11/12/opera-users-click-on-t...