You will never get 'verification' or refutation that one importer takes anything he gets and another 'cherry picks' the best, so you're just going to have to decide for yourself whether it's true.
Cimarron's guns have a reputation for high quality. There are few complaints about the guns they sell in the forums. They claim that they inspect all of them and reject those they don't like. I don't know for a fact if that's true or just a marketing claim.
I do have one gun purchased new from Taylor's and one purchased used that was imported by Cimarron. I can't tell which is which without looking at the box or reading the inscription on the Cimarron gun. Both are fine guns.