Yea, that was the part which I liked, it shows a deeper level of thinking which is cool. I don't totally agree with the whole "he'll cbet all of this range" as we just don't know that to be true.

Basically if you're 3betting UTG openers (players who already have a very tight range) you're shrinking their range in a way that leaves QQ in not the best of shape. Let's say a typical tagg open-raises 77+,AQ+ from UTG and we 3bet, against our 3bet he continues with TT+,AK. So by flatting we force him to take a wider range to the flop, one which we fare nicely against instead of a tight range in which we're flipping with.

Against loose openers 3betting is a much better option as their range for continuing against a 3bet is much wider, meaning we gain a lot more value from our 3bet.

As for your comments, I'm not sure why with QQ you'd want to represent and Ace or King as that means that you're trying to get all worse hands to fold leaving only better hands to call.