Is it just me or is this a Gym rather than an Armillaria sp?

[Zen Peddler]

http://www.naturallytrees.com.au/app/articles/articles/view/armillaria-mellea-root-rot

Looks large for an Armillaria sp??

[TheExplorer]

I'm pretty sure those would be Armillaria luteobubalina (Australian Honey Fungus). They do look a lot like Gymnopilus spectabilis and other Gym sp. though.

[DMTryp]

Kiiiiiiiiiinda looks like Gymno Sp. but its definitely not.

[Zen Peddler]

Definately not? id bet my left nut that image does not show an Armillaria species. No umbo, thin cap, size, it has a thick margin instead of thin and its the wrong colour and texture.