Zdad,
One would hope there is nothing different. With the candy. But there is definitely a different run with a mashgiach. That costs. Generally there is not a mashgiach there at all times. The extra time for the mashgiach costs and there are those who are along to pay for that.
But you haven’t answered why you are so bothered. No one is making you eat any twist let alone these. Why are you such a bitter person who thinks anything not done exactly the way you like it is terrible. It is terribly haughty of you to think that you are the be all. And if I may let you in on something, you are quite obviously wrong very often.