Less important IMHO than Chrome vs. Firefox vs. IE is the fact that we now find ourselves in a world where there are three serious competitors for browser mindshare instead of one dominant one. That makes collaboration on standards a winning strategy instead of a losing one: any two browsers can agree on something and push it with majority support, pulling the third along. When it was IE vs. the world, the existence of a standard (a sane standard, anyway) that could be implemented by its competitors was a losing stratagy for MS.
Bravo!