WP so far failed to gain traction in the US. The only place WP seems to take off so far is in the EU, where its getting traction pretty fast.
It could change fast of course.
Go look at amazon US right now under cell phones with a plan and best seller. What are you showing?
Sentiment: Strong Buy
Great if true
In the UK Amazon Lumia 820 is No. 1, 800 is No 2, Galaxy S3 is No. 3. in sim-free and pay as you go smartphones.
This is true.
920 nowhere to be seen in this chart. Maybe it's on other charts, e.g. subsidised ones, or maybe they are out of stock.