The visitors were denied a spot kick in the second half when Wayne Rooney appeared to have been brought down by Steven Caulker and although Villas-Boas is unsure of whether it was the right call or not, he feels there was much more to the game than simply blaming a non-decision for the result.
"Obviously it is going to be debated and debated and I hope it doesn't mar the game," he told Sky Sports.
"During the game we got most of the decisions against us. I prefer to look at this game on my view and United prefer to look at it on their view.
"We take our boost of confidence and the debate is going to be whether it was a penalty because that is controversy and it sells better, but we shouldn't mar the game and the quality of the game played in these difficult conditions.
"Fortunately we got a point, I think it is credit for the game that we had. We were the best team and created the best chances.
"I think it was probably the worst United game in terms of opportunities, with them having only four. It is a pity we couldn't win but I'm extremely happy with the draw obviously."