-it is Jolla's home market of Finland
-Finland is a small market where slight changes in absolute sales volume can show significant changes
-Jolla is satisfying pent-up demand for their phone
-it is on one carrier in Finland (the only one where Jolla is offered)
-iPhone aggregate demand is split into 2 whereas there is only 1 Jolla model
But hey, a win is a win...and it is certainly better than, say, failing to outsell the iPhone on this one carrier in one country
And the Jolla also outsold high-end Nokias (only the low-end Lumia 520 outsold the Jolla)