"No one really talks about who won the minor premiership that year.
"If you're thinking about that and then get into the finals a bit ahead of yourselves, you can fall out in two weeks and not even make the grand final.
"We haven't spoken about it and I don't think Wayne even cares about the minor premiership to be honest."
McCullough's immediate concern is keeping up the Broncos' winning streak this Saturday against a Manly team with a point to prove after confirmation coach Geoff Toovey will leave the club at the end of the season.
The Sea Eagles are not completely out of the hunt for a finals berth and proved last week with a convincing win over the Warriors in Auckland that their off-field troubles aren't affecting their on-field form.
With halves Daly Cherry-Evans and Kieran Foran as well as fullback Brett Stewart firing off the back of a strong forward pack, McCullough says the Sea Eagles pose a real threat.
"You go through their line-up, there's some great players in there and the pressure's off them now just to go out and play some footy," he said.
"Obviously Tooves is not going to be there next year. He's been a great servant for their club and the best way they can repay him is to win the rest of their remaining games and see what happens."
- AAP