I suppose it was my bad for using lines-of-code as a metric. What meant to convey is I feel like I've done the same amount of work in 10 days on hobby projects

I suppose it was my bad for using lines-of-code as a metric. What meant to convey is I feel like I've done the same amount of work in 10 days on hobby projects as 9 months on work projects. The difference to me is the hobby project is 100% my code and relatively small (25k lines total, 2k lines in last 10 days). Vs the work project which is 1000+ developers, no idea how many lines but at least 250k files. So, my point is, is it possible that often (not always) 10x programmers are preceived to be 10x because they are in a situation that allows them to be productive (maybe a smaller code base, maybe a code base they are super familiar with, maybe a new project so new code meaning it's their code, no someone else's) etc...