While I'd be the last person to laud big box chains' business practices regarding exotic animals, I have found that how well the animals are cared for can vary greatly from store to store. There are some whose employees & dept. mgmt. do care, and do take as good care as any specialty or M&P pet shop.
There are also smaller local shops that have been shut down for negligent care of the animals.
As far as care, I think it's more about the people who work there—wherever.