Lets not get carried away lol. Yeah he was doing good, but chances are he would not have won the fight. Fedor was just waiting for an opening, it was a matter of time before Arlovski made a mistake. Look at the two interviews, Arlovski said he thought he was doing damage and he was hitting him hard and Fedor said he thought they were glancing shots cause they barely did any damage. Arlovski wasn't about to knock him out.
In other news I'd like to see Arlovski v. Sylvia IV, and eventually see Arlovski v. Fedor II. Let's see if Barnett slips Fedor again, hopefully not because that would be a great fight.