Chrome can't even begin to compare to Firefox when it comes to handling anything >10 tabs, which is I think what 99% of people max out at, so Chrome doesn't bother about the rest even though people have been begging for years.

- no multiple tab rows

- when you launch, it reloads every single tab vs loading only the active one (the only sane option), causing massive slowdown and network traffic

- as a result in Firefox you can have 100's of tabs, open the browser, work in a few and close, without affecting anything.

- Firefox had Tab groups, an awesome visual representation, before they made it optional due to everyone copying Chrome's limited feature set.

- Chrome still uses much more memory

- Firefox extensions are by design much more powerful. e.g. Session Manager. And things like Tree style tabs etc.