Earlier quoted context omitted.
Firefox was amazing even when Chrome was released
No need to be revisionist. Chrome brought amazing work to the table. The multiprocess, sandboxed system was incredible - it's not to say that Chrome was the first (IE did it earlier) but it was certainly way ahead of Firefox for a long time. Chrome is the reason we have Seccomp V2 on Linux. Chrome made "software is always up to date" the standard. Before Chrome, Blackhole and PoisonIvy absolutely ruined people's comp…
Back when Chrome was new, you could run Firefox with a decent selection of add-ons to get security benefits of similar magnitude through different mechanisms. The NoScript extension was at the forefront, providing a lot of functionality way beyond just blocking JavaScript per domain. And Firefox with extensions always had better privacy controls.