You need to use quotes around their names as otherwise the results are skewed by pages that include steve and jobs anywhere in the page, together or not. In this case, Steve Jobs still wins, but not by as large a margin.
If you Google Fight Neil Young and Bob Dylan, Neil Young wins easily with no quotes, but add quotes and Bob smokes Neil.
You need to use quotes around their names as otherwise the results are skewed by pages that include steve and jobs anywhere in the page, together or not. In this case, Steve Jobs still wins, but not by as large a margin.