There are two reasons for why this is interesting:
1. Nokia and Apple have a history. In the past, Nokia has made several statements how they sold more mp3 phones than Apple sold iPods (2006), how they sold more phones in a day than Apple in a quarter (2007), etc.
2. Nokia and Apple have starkly contrasting product lines. Apple’s phones start at $400, Nokia’s at $20. Yet Apple is close to outselling them.