I think with an alternative band like Paramore, physical sales and pre-orders are very important in getting a number 1 so it's almost certain they'll get it.
Paramore land their second consecutive No.1 album in Australia, as their fourth, self-titled album debuts at the top of the ARIA Albums Chart becoming the eighth consecutive No.1 debut at the top.
Paramore were last on the charts with “Brand New Eyes” (#600) which entered at the top on the 5th October in 2009, eventually totaling 62 weeks within the Top 100. So “Paramore” also becomes the second No.1 album here for the Fueled by Ramon record label, and the album is also the 243rd performed by American act, and the 318th by a Group.
That's curious.
BUT YASSSSSSSSS 
I need Panic! to smash next!