Not just privacy. When Chrome came out it could literally spank Firefox' ass in speed; there was absolutely no contest then. But over time Chrome became bigger and bigger while the folks at Mozilla optimized FF code so that today the latest Firefox can outperform the latest Chrome while still being more trustworthy privacy wise. To me as of today there's not a single reason to use Chrome over Firefox, and users should also avoid using products requiring Chrome; just remember what became of the Internet when web developers started making sites that required IE to work.