They're one of the few artists that can push a crowd-pleasing rock song like "Still Into You" or "Misery Business" into the Top 40. It doesn't have to be about holding onto tradition or being a dreaded "rockist"; Paramore is one of increasingly few artists that can inject pop with this kind of variety.
Pal, as much as I love Paramore and respect them for making their music on their own, I would never consider anything in that album as rock but Now and Fast in my Car.
Still Into You is literally a pop song, not rock or roll.