Console sales are not that important. How many people have it plugged into their TV. How many people regularly play is a better sign of popularity.

This is 2011. Wii came in 3rd for number of games sold

http://www.vgchartz.com/yearly/2011/Global/

2012. A massive drop off for Wii

http://www.vgchartz.com/yearly/2012/Global/

The Wii was / is a big success but the 360 has had stunning longevity and a very passionate player base.