Cunha struck to cancel out Brenden Aaronson's opener for Leeds.
He said at the final whistle: "After the game against Wolves it was a little bit sad for us. Of course we want to win every single game, and then have a big opportunity to get into the top four.
"We need to keep going. After the draw, to come here isn't easy, we know how big this game is for everyone. But it is good to get a point here.
"It was so hard. We know what to expect, of course for them they try to do everything to win. It's hard, a lot of physical, but every single game when we wear this shirt we have to give it all, and today was no different."
On his goal, Cunha also said: "It's very important to go again after they score. We tried to do everything to win this game, and we hope the next one comes with three points.
"When everyone is here, we have everyone to create with me and create a lot of good things. We need to keep improving and try again in the next one."