Well I've used Firefox on both Linux and Windows for years and the Linux version is better than the Windows version. More polished, faster, feels better integrated. The windows version is great too, but I believe a lot of the developers respect open source philosophy and therefore we get first class software for opensource operating systems. Chrome on the other hand sucked on Linux for a long time (but was really good when it first came out). Chrome is pretty good nowadays but still takes three minutes to start, whereas firefox just opens up.
I don't use a lot of other mozilla software except rust (a little) and from what I remember they had spotty support for Windows when Rust first came out, but this is true of pretty much all new languages unless Microsoft creates it.
> Well I've used Firefox on both Linux and Windows for years and the Linux version is better than the Windows version. More polished, faster, feels better integrated
Do you have any numbers on the "faster" aspect? Most comparisons I've seen put the Linux version solidly behind Windows version.
As for features, for example video playback on Linux Firefox has severely lagged behind Windows version. It's not very long time ago that I needed to make some "non-recommended" about:config changes to get youtube working.
Even integration-wise I think I have had more problems on Linux than on Windows, file associations, copy-paste, and misapplied themes being most notable issues that come to mind.
I'm pretty sure that I've seen even Mozilla say that majority of developer effort goes to Windows first, and it shows. While you anecdotally might have had good luck, I'd claim that is atypical
I also thought Firefox ran better on Linux a bit. I decided to test your Chrome claim on my Core Duo 2 box running Ubuntu. I just downloaded Chrome from Software Center. First run took 2-3 seconds to usable browser. Something is wrong with your PC, distro, or installation.
"but I believe a lot of the developers respect open source philosophy and therefore we get first class software for opensource operating systems"
That's probably true to some degree. That the least, there might be more developers on FOSS boxes testing it which spots more problems. Hypothetical as I have no data on Rust to test it with.
I don't use a lot of other mozilla software except rust (a little) and from what I remember they had spotty support for Windows when Rust first came out, but this is true of pretty much all new languages unless Microsoft creates it.