Probably Metallica. Their core audience still buys albums. Bruno might be able to pull though with SPS, but I still think Metallica will sell enough copies to outdo him.
Bruno - 197k (2012)
Miranda - 174k (2014)
Metallica - 490k (2008)
Oh wow. This will be interesting.
It's releasing in mid-late November like this that denied Rihanna a #1 album for 3 years straight. Yet people will still drag him I'm sure despite the stiff competition.