CMS is way above Barnes in ability would any manager offer £2m for Barnes never ever.
Absolute rubbish. I would take Barnes over CMS ability wise every time.
However, I don't think either CMS or Barnes is worth £2m now.
We basically paid (albeit correctly at the time IMO) for a prolific League 1 striker. We now know that he doesn't fit with the style we play particularly well, as he needs someone to feed off. We also know he struggles at this level in many other respects.
Hindsight is a wonderful thing etc, but it would clearly have been better to save the money and keep Murray, by paying him more.