Rounds 1 and 4 were kinda toss ups (I gave the former to Bendo, the latter to Pettis, as did most people), with Pettis having that strong vibes flowing at the end of the 4th Round.
Obviously Pettis pushing the action more forward than Bendo in Round 5 (Bendo was pushing the action, just not as much), but once that head kick landed, it went from Pettis having slightly more momentum to just totally controlling that fight.
I still don't get why causal MMA fans don't watch that full fight, because man, in context, that head kick was a momentum killer for Bendo. Plus, it was a FREAKING AMAZING FIGHT! No really, if you didn't think about reacting crazy (like jumping on your couch like Tom Cruise at some point in that fight) you're not a real MMA fan.