Watson certainly played his part in a heroic Wigan display that belied their status as a club fighting to beat the drop.
Watson, a £2million buy from Crystal Palace in January last year, said: "We said at half-time if we could step it up we could win the game.
"But then we went 2-0 down early in the second half and we were thinking 'Bloody hell, we've now a mountain to climb', especially against a team like Arsenal.
"People were probably thinking the game was over and done with, but we showed great character and fighting spirit.
"We stuck in there, got that first goal back and then there was only one team in it after that. We got what we deserved."
The astonishing result leaves Wigan one win shy of near-certain safety, with vital matches at relegation rivals West Ham and home to Hull looming over the next two weekends.
"It was a massive result," said Watson.
"The winning goal from Charles was a fantastic strike, a great goal to win a game, any game, and a great moment for the team and for everybody in the town.
"We're at West Ham this weekend, which is another massive game for us, and if we can get a result there then we'll be safe.
"This club needs to stay in the Premier League. We're almost there.
"If we stay up we then need to finish as high as we can and build on it next season."