Absolute rubbish this one, I'm sorry. He was our best player in 2011 UCL final, I also remember him being MOTM in 2006/07 title decider against Chelsea at OT. In fact, many many times, he was the most important player in big matches for United.
What happened today has also happened to Xabi Alonso when he played against Dortmund and United in 2012/13 as he was marked and harassed by opposition players. Does that mean Xabi Alonso not a big match player?
The problem was that today he was marked both by Lallana and Firmino, he needed help from Pogba and Herrera. While Herrera was good defensively, he wasn't available enough to receive the ball from Carrick. As for Pogba, well nothing to say there as we might as well have played with 10 men. Even then, his performance(or the lack of it) today is exaggerated, apart from one misplaced pass I don't remember him doing THAT much wrong, not at least enough to be replaced by the worst player in the squad in Rooney.
That substitution nullified us even further, as we created much lesser than we did in 1st half. In fact, apart from the Pogba debacle, Liverpool didn't have a sniff on goal in the first half, but they were the better team in the second half. We should have been miles ahead due to the chances in the first half, but at the end we got away with a draw despite having a horrific second half.