Wigan will climb out of the bottom three for the first time since the end of March if they defeat Martinez’s old side at the DW.
Three points would also give the Latics the psychological boost of knowing they will walk out at Wembley for Saturday’s FA Cup Final above the safety line.
“Being out of the bottom three on Tuesday night, that’s not going to have a major say on where we end the season,” said the Wigan boss.
“We’re not viewing the game simply as a chance to move out of the bottom three. Each week the table has its twists and turns so, for me, the only thing to focus on is the opportunity to add more points to our tally.
“When May 19 comes around, that’s when we’ll focus on the table with a points tally that will help us achieve our aims.
“If you win against Swansea and lose the next two games, you’re not going to achieve the aim of staying in this league.
“It doesn’t matter if you’re out of the bottom three or not. I think what’s important is that we carry on performing in the manner that we did against West Brom on Saturday, and with that mentality, to make sure we get as many of the nine points that are left.”
