The Red Devils headed to White Hart Lane on Sunday hoping to inflict further Manchester misery on a side hammered 6-0 by their arch-rivals City a week earlier.
Spurs are, however, a difficult side to break down on home soil and United had to twice come from behind to secure a share of the spoils.
Smalling concedes that David Moyes' men would have preferred to emerge victorious in north London but, on the back of last week's 2-2 draw with Cardiff City, feels there are positives to be taken.
He told MUTV: "I think today was probably a fair result.
"Given the result last week, we knew that coming here against a top-five club would be tough. I think we considered Cardiff two points dropped, whereas today might be a well-earned point when we look back on it.
"We were going for it in the second half and the manger threw on some more attacking players, and, to be fair, they threw on some attacking players as well. We were both going for it - we just needed that little bit of luck to get those three points."
United are now unbeaten in their last 12 games in all competitions and Smalling is convinced they can start eating away at the nine-point gap which separates them from Premier League leaders Arsenal.
He added: "We showed a good reaction and I think that is accumulative of the last 10 games when we have shown a real togetherness.
"I think it is now about keeping around the top two and we could have done with these three points. Last week's result was more of a killer blow.
"Obviously, we have now got Everton and Newcastle, so we need to make sure we get seven points from a possible nine. We need two wins next week."