Link to some of his specific code please?

Note there are many 1000s of great coders on this planet who have produced market flops. Coding acumen alone is not sufficient. It is a combination of divergent but salient skills that can make million user products multiple times (as I have done). For example, is Mark Zuckerberg the best coder? Yet he did code and he was an astute marketer and builder of organization.

What has xcore accomplished in the market?

I am probably a much better coder than you know. I don't know any coders who are clearly superior to me. I know only some peers and each has their strengths and weaknesses.