Not comparable only in outcome. Flower hit Hohaia while he was standing. That was bad enough, but then he followed it up with the second punch on the ground.
Granted, Williams hit O'Neill from the side and he did't see it coming, but I doubt Anasta did either. There was no warning at all.
You are only looking at the knockouts, not the act.
I'm looking at the individual acts as a whole (Flower went on to hit Hohaia again when on the ground, and WIlliams attacked someone completely unprepared and unaware he was even in sight), and both Williams and Flower knocked out their opponents. The difference in outcome is often due to the difference in the action when it comes to these type of incidents. That being said, I'm happy to agree to disagree.