Actually Nokia Ovi Store had 2 millions downloads each day four months ago and now they are having 3,5 millions. There are not so many applications and there are a lot of devices with the possibility to download software from Ovi Store.

BUT Nokia QA is just crazy... you need few hours to upload your app to Android Store, but you need more than two weeks to upload to Ovi Store. And this only happens if the program passes all the QA test. It's quite normal to have any sort of stupid problem in a description, really easy to change manually in a second, but it forces you to submit it again and restart the two weeks counting again. By the way, I'd say the documentation is far to be clear and perfect.
Some people left Nokia-Qt development because they needed more than two months to have their application available on the shop.