Manchester City are 13 points clear at the top of the table with a game in hand but only six points separate United in second from Chelsea in fifth, with just four Champions League places up for grabs.
The Belgian worldwide has now scored 22 goals in his debut season at United and the burden of wearing the No.9 jersey for the Red Devils seems to have been lifted in recent weeks.
"I've been in the game for so long", said the striker. "I think he played fantastically well", said Mourinho.
"Overall, I think we do have a good record and have over a number of years", Smalling added.
"It took us some time to adapt to [the system] but from that they were really intelligent and I am really happy with that", said Mourinho.
Asked what it would take to get the respect he feels he is due, he said: "If I win - I want to win. That will go a long way to deciding it but I think United will come out on top overall this season". The hosts barely played any football and allowed their visitors the freedom to surge forward at will in the first half, though with Chelsea still searching for their ruthless streak, it was Jose Mourinho's side that emerged victorious. A lot of big players that we recognise today in the game are players who have won something and I want to be [the same].
While the state of play this season has not been a smooth ride from start to finish for the Belgian worldwide, he has hit a purple patch of form in recent weeks and looks to build upon that with some crucial games approaching in the Champions League and FA Cup.
"The only way that's going to get better is when he totally completes his game by making sure that when he gets the ball - for the big strong guy that he is - people can't get it off him and he doesn't lose it as easily as he sometimes does".
"I don't want to speak about why I left Chelsea".
United paid £75m to sign Lukaku from Everton in last summer's transfer window. But both Spurs manager Mauricio Pochettino and Palace boss Roy Hodgson, who handed Alli his England debut in 2015, defended the 21-year-old.
"But what he also does now, for the winning goal, I've always felt he's just a goalscorer, there isn't too much more to his play".
In Sunday's matchup, two English giants fought tooth and nail to secure three points.