Sorry, Aaron Rodgers ... your reign as King in the NFC North is over -- 'cause the Bears are the best team there now -- so says Chicago legend Mike Singletary.
Da Bears just waxed the Bucs 48-10 ... and when the greatest LB in Chicago history spoke with TMZ Sports about the W -- he told us he's convinced they're better than the Packers AND the Vikings.
"At the end of the day, I think the Bears are the most COMPLETE team in that division," Mike says.
Of course .