Boyce says that he is suprised by the team's recent form, which included wins over Manchester United and Liverpool.
The 32-year-old said: "To be honest, I'd have been happy if we'd still just have been in contention at this stage.
"A lot of people were quick to write us off but that gives us a point to prove. To beat those three teams has been a fantastic achievement."
Wigan have been in the Premier League since 2005.