Everything manual is whitehat and everything automated is blackhat.Nothing more different in between both of them in terms of SEO.However I have got some good results from blackhat and whitehat.
It depends on what you call a blackhat SEO, but most blackhat techniques are aimed at driving more traffic, hiding things from search engines, and increasing rankings. If done correctly, blackhat strategy might work, until it gets discovered either by search robots or assessors. Sometimes it will for a couple of days, sometimes for months.
Black hat SEO is a bad Techniques and it should avoid the same while working with SEO. The tactics used in the black hat are not legal and its break Search Engine policy.
Advantage of Black hat technique only get ranked your site higher on Google for short term but very risky.