Go watch round 1 of that fight again without the typical bias known as Joe Rogan.
Each fighter scored a takedown in Rd 1. Both got up shortly after the takedown and no damage was done to either fighter. Both were equal in grappling. Both delivered similar amounts of leg kicks. But the control of the fight in Rd 1 was completed by GSP (and every round after that, including Rd 2 after GSP recouped his scrambled brains).
So to those who thought it was a clear decision for Hendricks last night, myself included in this population, I can see why it would have been scored the way that it was.
I've watched this fight 3 times in total, last night, first thing this morning and just a few minutes ago. I still see GSP as the victor in Rd 1. Who cares about fight metric, total strikes thrown, etc. Six of those significant strikes in Rd 1 for Hendricks came from elbows to the side of GSP's head when he was going for a takedown. So that round is a lot closer than those who thought Hendricks won that round. Go watch it again......PS, I'm not bias to GSP winning. I just wanted to understand what I may have missed if I was scoring each round as opposed to getting caught up in the excitement of the fight.