I'm sure if prepared correctly, the pies (etc.) may taste OK, to those who either don't mind, or who are used to microwave food. But I think you are missing the bigger picture here (or you are just trying to wind people up

).
When compared to the extensive range of 'on site' prepared food, and a range of prices to suit those from passing snacks, to locally popular meals, then I'm afraid there's no comparison what so ever.
I used to buy the smaller snacks - but as they are no longer available, I'll pop into the local Tesco's for a quick snack lunch. And surprise, surprise, I see a number of ex sams meals customers there.
But hey, don't take my word for it - just ask any sams pub manager to give you a comparison between the old and the new, on; 1) quantities sold (which also pull in wet trade), and 2) Turnover / GP.