problem is the iphone has a little bit more pull then android. more people are going to buy the iphone on sprint then android phones (probably combined). It's always been that way, I see no reason why this would be any different.
People choose carriers first, and then phones. Sprint's network sucks as it is...they're going to sell tons of iphones and they'll eventually have to move to tiers. If VZW who has the most robust network there's no reason to think Sprint eventually won't.
You sir, are severely misinformed. Android phones have a much greater marketshare in every country, including US. Also, Sprint matched Verizon for customer satisfaction in Consumer Reports 2010 survey. I'm not saying their network is as robust as Verizon's is, but it's come a LONG way in past years.