With the season's second Sydney derby looming, each side of the cross-city chasm is recalling how the first played out in October.
Earlier in the week Western Sydney playmaker Roly Bonevacia was quick to call the Sky Blues lucky for pulling off a 2-2 draw at Allianz Stadium, citing a penalty just before halftime as the moment that swung the contest in their favour.
O'Neill's view is stark in its difference, and the 23-year-old issued a menacing caution the Wanderers could be set for a return to their long-time derby drought prior to February's Western Sydney breakthrough.
"All I see (in that game) is a sign of a champion team," O'Neill said.
"When the sticks are down in the first half and we concede two goals back to back, we re-group at half-time.
"I think any other team could have thrown in the towel and said it's not our night, but that's not what we're about at Sydney FC. That's not our team culture.
"We came out in that second half and personally I think we could have won it with the chances we had at the end."
In line with Sydney's party policy of not talking about the opposition, O'Neill stopped short of declaring the injury-racked Wanderers are there for the taking at ANZ Stadium.
Instead, he echoed coach Graham Arnold's mantra that the team, now five points clear at the summit, are still far from their best.
"You look at it in depth and you know you can improve but we're still winning football matches," he said.
"Which is the scary thing because on a weekend when we put everything together, we could really do damage and put a team to the sword.
"What better way to do that than this Saturday?"