I know I'm late to answer this, I meant solely from a market share and consumer focus perspective. I think a big test is going to be how the 900/910 does in the US.
Just below you:
godelsmetric: the nokia W7 phones are the first thing that's tempting me away from an iphone
i think i'll wait for the iphone 5 and then reassess the situation
the lumia 900 is so niiice
It's those responses I keep reading that encourage me. But, agreed, big litmus test.