Size isn't nearly as much of an issue as some folks want to make it out to be. Small stature is only a problem when you don't suit your game for it. The big, hulking defenders of the NHL cannot clutch-and-grab anymore. So the small, agile forwards are much more effective.
Anyway, Mats definitely has the "nor-english" accent. But it's not as bad as Petter Solberg's though...
He's the only driver I can think of that doesn't take his pace notes in his native language. I always wondered if he grew up with English as the primary language in the Solberg home because Henning's accent is also heavily Engish-ized.