Megson said: "Although we have a reputation for being big and physical, there are quite a few players in our team who are not big and not physical.
"So we are not a football team that falls into the category that many people often judge us to be. It's a fallacy.
"We have some physical players and we want them all to compete, but since I have been here we haven't had anybody sent off."
Megson's strugglers have taken just one point from six games.
He added: "It makes me laugh when people talk about the way we play football.
"What is football? Football is also about tackling, closing players down and doing well at set-pieces.
"Yet when we do that, they aren't long passes but long balls."