Collaboration overhead. If you replace 10 average programmers with 1 good programmer he doesn't need 10x productivity to match the combined productivity of 10 programmers (which is not a sum). On top of that, programming productivity is also a qualitative measure that goes beyond feature X working correctly. One person can code it in such a way that every time it needs changing it's easy to work with - thus saves uncountable hours in the future.

Not all men are created equal - I don't see why anyone would rail against that. Some people are stronger than you, some people are better coders than you - it's OK. Compare yourself with last year's you instead.