I was at a LBS recently discussing a new bike with Red 22 (I currently have Rival). The discussion was about what bike/model and not about the gruppo. At the end another salesman said I should not not get Red but get Dura Ace instead since there are problems with Red. He also said that they only stock bikes with Shimano for that reason.

So... are there problems with Red 22 or is it sales BS?

Not looking to get into a Sram vs Shimano debate. There's already plenty of them on the interweb.