With Welbeck joined on the scoresheet by fellow striker Wayne Rooney - as well as Anderson inbetween - plus Javier Hernandez coming off the bench to make an earlier-than-expected start to his campaign, Sir Alex now faces a selection dilemma in attack for the next home clash with Arsenal, this Sunday at Old Trafford.
"If you look at Dimitar Berbatov, Michael Owen, Chicharito and Wayne Rooney, they've all got different qualities," assessed Sir Alex. "That's not a problem, you have to utilise the team as best as you can. The horrible part for me now is that with Chicharito back, what do we do? It's going to be a big problem for me."
The boss could have similar issues in defence when Rio Ferdinand and Nemanja Vidic eventually return, with Phil Jones and Chris Smalling in especially fine form at the moment.
"Phil had a fantastic season with Blackburn last year," recalled the boss. "We made enquiries in November, hoping we would get him in January. It wasn't to be but we were prepared to wait anyway. You saw tonight he's a fantastic young player. Chris had a marvellous season for us last season. He's now getting maturity and doing a great job at right-back, you'd think he'd played there all his life.
"All the players have done well tonight. David De Gea [on his home league debut] was very confident, excellent apart from a ball at the very end of the game when he got a bit slack. But really you can't criticise any of them because as a team they all played very well. We're very pleased."