Justin: Stratford, Ontario.
Austin: San Antonio, Texas.
Justin: 5'7 (although the subject of much speculation).
Justin: Signature style is swoopy, shiny and perpetually in his eyes.
Austin: Same shape as the Biebs, but bigger and wavier.
Justin: Grew up below the poverty line in low-income housing his mom had to juggle several jobs to afford.
Austin: Has risen to internet stardom out of an 8-ft by 10-ft room with a foldout futon bed.
Justin: Referred to the Sistine Chapel as the "Sixteenth" Chapel on the David Letterman Show.
Austin: None of note yet, aside from pretty silly grammar and punctuation.
Justin: Only child raised by single (teen!) mom Pattie, with the help of her parents/his grandparents.
Austin: Only child raised by single mother Michele, after his father passed away when Mahone was 16 months (Michele later remarried, divorced and moved their family in with her parents/Mahone's grandparents).
Justin: Started posting homemade videos of himself on YouTube in 2007, covering R & B artists like Usher and Ne-Yo, and racked up 10 million views before being signed to a label.
Austin: Started posting homemade videos of himself on YouTube in 2011 covering pop artists like the Biebs and Adele, and has thus far racked up more than 72 million views.
Justin: Beliebers, who are stricken with "Bieber Fever."
Justin: Almost 24 million Twitter followers and nearly 45 million Facebook fans.
Austin: Over 760K Twitter followers and nearly 500K Facebook fans.
Justin: Secret softie who loves classic chick flick The Notebook.
Austin: Lets fans ask him, like, anything on his blog's "Ask Me" section.
Justin: Made $55 mil in the last year alone.
Austin: Shows projected to draw at least $50K and merch sales projected at roughly $50K as well (per month!).
Justin: Pedal powered submarine for two, exotic private jet tour by Smithsonian Journeys, 2012 Lotus Evora (all around $70K).
Austin: One night under the stars on AKA Central Park hotel's penthouse terrace, iPad 2, Logitech customizable earbuds with personal sound coach (all around $2K).
Justin: Never say never.
Austin: Haters gonna hate, Mahomies gonna love.
Austin: Single and ready to mingle.
Justin: His bust immortalized in wax, currently in residence at Madame Tussauds.
Austin: The foldout futon bed upon which he laid his perfectly-coiffed head.
Justin: Named by Forbes in 2012 as the third most powerful celeb in the world.
Austin: Opened in May 2012 at the Q102 Springle Ball for Adam Lambert, the Wanted, Hot Chelle Rae and Carly Rae Jepsen.
Justin: World domination, perhaps?
Austin: Continuing to gig around the country, plus several shows in other countries.
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