The Other Side of the Coin
They are similar in that they have both been high scoring players in the ACC that have been National Players of the Year, but for every similarity you can find there are even more differences. They are similar because they are great players with succesful teams (like most NPOYs historically). Other than that, their college careers have looked pretty different.
Hansbrough came in as the #1 option on a rebuilding Tarheel team at the forward position... he then steadily became better and better from one season to the next. The team has grown with him as they went to the Final Four this last season.
JJ Redick came in as a sharpshooter who coasted and partied his first two years on natural talent (lots of it obviously) and then started his Duke Career Part Two during the summer before his junior year.
JJ Redick Final Four- Sophomore Season (Sweet16, Final Four, Sweet16, Sweet16)
Hansbrough- Junior Season (Second Round, Elite Eight, Final Four)
JJ- Three point shooter
Hansbrough- well, basically a completely different skill set in every way
As was pointed out, their point totals are fully 363 points apart after three years. This is kind of a huge difference.
I think there are interesting points here, but "Isn't it crazy how similar JJ and Tyler are?" is not something you are going to hear outside of the triangle. They just aren't very similar besides the similarities that naturally come with the fact that they are great players on great high profile teams.