This is one of the reasons why when I walk into the stores in very leery of the reps. On the positive side, there is an assistant manager at the t-mo store by my job. He is a tech junkie and very good at his job, because he tailors his conversation to the needs of the client. When I bought my 810, he merely asked me if I had questions about the phone - when I told him I did my research, he smiled and rang up my purchase. Overall, the reps are good at his store...very chill and non biased.
There was another t-mo rep I ran into at the Union Square store that was chill. When I bought a case for my 810, he asked me why I picked WP. When I explained my reasons, he nodded. We ended up talking about both WP and the Nexus line as we both owned the G. Nexus.
At AT&T, I had a rep ALMOST sold me a Lumia 900 in Spring 2012 at a store in Wall St area. She was a cutie, but more importantly, she demoed the phone well, and it was her personal phone so it was so easy to talk to her about WP and heard what she liked about the phone. The only thing she hated about the 900 was that they gave her a black one when she really wanted a white model. So there are good and bad reps out there. Some just see it as job and are trying to push sales for incentives and other reasons. What needs to happen is MSFT must work on improving the OS and getting those updates out more timely. Yes we know coding and testing takes a while, but honestly, WP has better built in "I don't need an app to do this" type features than iOS....that's an angle MSFT should be pushing...