In terms of military technology, which is what matters for potential conquest - not particularly. Especially not in 1300, which is the timeframe for potential colonisation.
Many of the Maori weapons of war that were familiar to Europeans developed later. In terms of what they had in 1300 - various stone spears, clubs and other melee weapons, and short-ranged thrown weapons. They didn't use bows and arrows.
The main weapons the Aborigines used at the time were spears (wooden or stone-tipped), spear throwers, clubs, shields, and war boomerangs. These were broadly comparable to what the Maori had in 1300.
If you're positing that the Maori technology would evolve significantly after 1300, that's certainly possible. But given that the Aborigines would be in constant contact with the Maori ITTL, their military technology would have time to evolve in parallel too.
In terms of other technology, the Maori were ahead in some areas, although not universally. In shipbuilding and navigation, they were obviously far ahead. Ditto agriculture, although that's less clear-cut of an advantage in Australia, given that their crop package wasn't the best-suited for Australian soils, and the Aborigines were very good at managing the land to obtain food.
In some areas, eg hunting, I'd rank the Aborigines as ahead of the Maori.