The club's 2-0 win at Portsmouth on Saturday lifted them to fourth in League Two and they are just three points off top spot despite having suffered from a string of injuries.
"People can take us seriously or not. I don't care," he told the South Wales Argus. "They can think what they want but if they don't it's at their own peril because we know we'll give anyone a game.
"I think we've surprised a few people and I hope we continue to do that.
"We have got some really talented players and we are mentally and physically strong so we're ready for the Christmas period when some people will drop off physically."