The Blues' chief watched as his side's bid to move within four points of Premier League leaders Manchester City was thwarted three minutes from time at the DW Stadium when Jordi Gomez cancelled out Daniel Sturridge's earlier strike.
However, with the draw against the struggling Latics coming on the back of a three-match winning run, Villas-Boas insists his players will still be fired up to face Tottenham in Thursday's massive game at White Hart Lane.
"We conceded a goal towards the end that was disappointing and it prevented us from getting the three points we expected and it's a pity because the players worked hard for three points," he said.
"But the confidence won't be affected. We'll have to wait for Sunday's games to see how the title race is affected and we might drop points back from the leaders. I don't think it undoes the positivity we had created. Wigan are a different Wigan because they have momentum from their recent results."