Well I've had this discussion with others, and sadly he didn't win
I'll explain:
Basically Hendricks
dominated 2 Rounds, which were obviously Round 2 and 4 and inflicted a lot of damage. Conversely GSP ended up
just edging the rounds he won - scoring with strikes, but inflicting no damage.... Rounds 1, 3 and 5. So it looks like Hendricks dominated overall as GSP although scoring, didn't even mark Hendricks. Round 1 was basically where the fight was lost, as his corner seemed convinced he took it and consequently he took his foot off the gas in Round 5 and cruised and I sorely wish he hadn't - he deserved the win.
I think the problem comes from the 10 point must win scoring system, it just isn't tailored to suit MMA. For example, judges almost always ensure a round ends 10-9 regardless of what occurred. This encourages fighters to take in easy in rounds and just try to win near the end with a quick flurry or two. Why waste all the time and energy dominating a round and possibly putting yourself in danger while doing so when the best you can get from total domination is 10-9, with maybe the rare 10-8 being awarded by just one judge.... If the fighter knows hes going to be down more in a round he's more likely to step up in the fight which would create more action.
So if you amended the scoring system to take into account and fairly score the different aspects of MMA, perhaps it would make each round and therefore the whole fight more competitive and fair.
For example;
1 point for a successful strike (body or head)
2 points for a power strike (or perhaps a strike that causes significant damage?)
3 points for a strike that clearly staggers the opponent
5 points for a knockdown
3 points for a takedown
2 points for a close submission attempt
1 point for reversing a position or a sweep
1 point for successfully defending a takedown
1 point for each minute in top position
I don't know - that's just a quick idea without putting much thought in, but you get the idea.
So as said above, what has caused the controversy in this fight is that Hendricks won 2 rounds convincingly, he was in effect quite dominant. GSP just won 2 rounds (although I still think the 1st Round was 50/50) and then easily won the 5th because Hendricks thought he'd done enough. If, however, you applied the (hastily made) system above it would perhaps provide a score line that is closer to what actually happened in the fight
Actual scorecard:
...Work in pRogress: Custom SS Catback | Tegiwa M | Ferodo's | J's Fr Strut | Mugen Plough