There's a problem ... the header says '5 years' for the fake person, but the rest of the resume has experience going back 12 years. Guess what the auto scanner picked up.

Secondly, the real resume has nearly as many grammatical and typographical errors as the fake. The fake one is appalling when read, but the real one isn't compelling either. If, after 12 years, our guy has some interest in markdown editors and doesn't even know why, I'd be tossing that one -- but I'd never see it.

It's all pattern recognition of keywords and figures in initial screening.