No, same hours worked. Often far less hours worked and more accomplished!

I've seen some people read through a bug report and have the area found and fixed in a couple of minutes, and the bug passing QA first time.

I've seen other people take almost the whole day just to track down that same bug in the code, let alone fix it or get it past QA. By that time, the first guy had finished a whole stream of other tasks.

10x definitely exists - hop around a few companies and you'll come across one pretty quick. They are rare, but easy enough to find if you've been through a few startups.