Villa's thumping win on Monday night moved them five points clear of Wigan who currently occupy the final relegation spot.
However, Martinez believes Villa's win has worked in Wigan's favour as it has drawn more sides into the relegation dogfight.
"We wanted Aston Villa to have a very strong ending to the season," admitted Martinez.
"The reason for that is I don't think it would be healthy for any of the teams go into the final game of the season as a final, a showdown, where one of the teams has to get relegated. I think that would be very dangerous.
"As it stands now I think it shows the fight goes a bit further than two teams.
"I think that is only a positive for every team involved in that.
"It is great for us that the fight to avoid that third place is more open than just two teams."