Here's my selection.
2010
Katy Perry - Teenage Dream (Several big singles – especially in the USA)
Rihanna – Loud (Huge singles, Great album sales, Great tour)
Bruno Mars – Doo-Wops & Hooligans (Huge singles, good album sales)
2011
ADELE – 21 (No need for explanation, but it had no tour)
Lady Gaga - Born This Way (Huge 1st single, Huge tour)
Rihanna - Talk That Talk (We Found Love alone, bringing ratchet pop into mainstream)
2012
P!nk - The Truth About Love (Great album sales, great singles, massive tour)
Taylor Swift – Red (Huge 1st week album sales, Great singles, huge tour)
Rihanna – Unapologetic (Huge singles – Diamonds & Stay, Good album sales, Massive tour – stadiums)
Bruno Marts – Unorthodox Jukebox (Great singles, Great album sales, Great tour)
2013
Justin Timberlake - The 20/20 Experience (Great album sales, Massive tour)
Katy Perry – PRISM (Huge singles – Roar & Dark Horse, Good album sales, Big tour)