Arsène Wenger’s men were minutes away from setting up a fourth-round tie against Brighton after goals from Lukas Podolski and Kieran Gibbs cancelled out Michu’s opener.
But Danny Graham scored an 86th-minute leveller to force a replay at The Emirates on 16 January, and Arteta is desperate for Arsenal to beat the Swans and keep their cup hopes alive.
“It’s a great chance to win a trophy. We don’t want to miss it,” he told Arsenal’s website.
“We improved a lot in the second half [against Swansea]. We had many chances to finish the game earlier, but then suddenly with one mistake they scored the first goal.
“We kept going and showed a lot of character to get back into the game, score and go ahead. But then we conceded a sloppy one again.
“I think we were the better team. We dominated possession better than them and created more chances. We deserved to win the game and that’s why we’re disappointed.
“We’re on a good run. We’re disappointed with the draws in the last two games as we could have won both of them but I thought in the second half we played very good football.”
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