The greasy nerd will be done after a month with something barely working and he will say it’s a masterpiece. It will lack the login functionality but he will say someone else can handle those banalities.
The senior 3 principal software engineer will create a 20-something deep layer cake in Java after 3 years. It will be done perfectly to specification and will be as bland as sand.
No other programmers will want to touch either, and that good folks, is the state of programming.