It's nice to have buddy who remember your passwords. It's natural that web browser offer you to remember your web passwords. But what if you need to know what are those eleven bullets that password manager automatically entered below your login?
Firefox can show you the passwords in a password manager. The only problem is that it shows all your passwords at once. Not a big problem when you are sitting at home, but what about showing all passwords in a office or in an airport? Tens of people can see your passwords! Not a big deal!
Chrome is more secure even in this one little feature. It stores passwords (when you allow it, of course). It also offer you to show your passwords. But it's showing only the password for account you currently select.
Only problem is that you can not copy that password, but I hope someone will take care on this.