Have to imagine Q1 is a small quarter for them, sandwiched between Q4 holiday sales and Q2 return of summer/outdoor activities. Probably not indicative of full year performance.
Not trying to forecast from it, just comparing it to the same time last year. You would expect similar seasonal effects in 2013 and 2014, no?
I'd say product releases could introduce a significant amount of variance.
They also released a major new generation of cameras in October 2012 (Hero 3), while October 2013 included new hardware but was more of a "tock" (Hero 3+).