Your logic is flawed because Jordan Taylor doesn't make a single mock draft that exists. If Burke is getting a draft grade, he's regarded as a better prospect.
The Point Guards in this draft are Austin Rivers, Marquis Teague, Tony Wroten, Tyshawn Taylor, and Trey Burke. 4 of them are freshman. All of them have weaknesses. Yet Rivers is getting a lottery grade, and Wroten and Teague are getting 1st round grades DESPITE being measurably worse at basketball.
BECAUSE THEY ARE ALL AT LEAST 6'3".