But, since you asked, here's how I would compare the two:
Athleticism: Griffin by a mile
Agree
Handle: Griffin by a mile
Agree, but I'm not sure the extreme relevance of a PF having good handles. It's more important for BG's game though.
Passing: Griffin by a mile
Griffin, but barely. His higher TO rate negates a lot of natural skill.
3-point shooting: Love by a mile
Agree
Midrange shooting: Surprisingly, Griffin in a close one (I can provide stats, if you'd like)
Call this one even. Blake has really improved here.
Low-post moves: Love (Griffin is actually more effective around the rim, for the statgazers, but he doesn't have Love's array of post moves)
Agree
Defense: Griffin, but it's close. Neither is very good, but one can at least stay in front of people.
Love is the better post defender. Blake better perimeter. Love better overall, both are average.
Rebounding: Love in a close one (though I maintain that he wouldn't have 18-20 rebound games playing alongside DeAndre Jordan)
Agree
Discuss.