Manchester United cruised to a 2-0 home win over West Ham with both goals from Ronaldo coming in the first half. However, boss Sir Alex Ferguson was less than impressed with the second half performance as United failed to hit the heights of the first 45 minutes.
"The first half was magnificent," the Reds boss told MUTV.
"When you get a performance like that in the first half you're looking forward to a second-half of the same. You hope you can maybe add to the goals tally because you never know, goal difference could be important come the end of the season.
"We didn't capitalise on our first half performance. They just took their foot off the pedal, playing a couple of gears below what they are capable of. It was too relaxed for me."
"Berbatov's play for the second goal was absolutely magnificent," Ferguson said. "You'd pay double the money to watch that. It was fantastic imagination, control and balance. Ronaldo just had to tap it in. How (Berbatov) managed it, I don't know. I want to see a replay of it again. It was absolutely stunning.
"Ronaldo took both goals well. He's getting there. He's missed the benefit of the pre-season work. He's been getting his pre-season work in by playing games. He's doing well, and has five goals this season.
"Hopefully he'll get to 42 goals again. He's capable of that because he is such a threat in the penalty box."