Chrome dev tools are superior to firefox where I remember a time nothing could compete with firebug.
The chrome extension API is now better than the upcoming "Web extensions" which removes extensions access to XUL and dumbs down the API to make it compatible with chrome extensions.
They've been trying to replicate the chrome sandbox for years and it still hasn't made it to production.
It goes on and on. They are catching up and doing it poorly, not leading nor innovating.