Simplistic way to look at things but I would say the Wallabies on paper have gotten a fair bit better, and the Lions may have gone marginally backwards.
Porter can be close to woeful at scrum time, and I hope AAA is licking his lips at that match up. Ryan has been doing his best Nick Frost impression this tour, and at this stage of their careers you'd much rather have Sione instead of Aki in my opinion. Also think at home Tuipolotu would have been set for a blinder. With the slightly wetter MCG track, colder night than Brisbane, I'd also prefer the 6-2 over the 5-3.
Carn the Wobs.