It's not way better at imps, often they don't make a game. A phantom save is terrible at imps. We have an ace, a void, a random queen, and 2-2 in the majors (they may not even have a fit!). That is a lot of defense. On the offensive side we have not much, and they are almost certain to make the best lead. If we have a good save (200 vs a game), partner will often be well placed to take it after our 4D bid. Partner's hand is completely unknown, so I'm much more worried about just going for a number vs nothing than going for 800 vs 620 or w/e. Obviously sometimes 5D will make them guess wrong, and that is by far its biggest upside, but most of the time once youre at the 5 level vul they're just going to shrug and double. Also lol @ me resulting, I bid 4D before the results were posted. If your brain is not capable of looking beyond "omg I have a 9 card suit I must bid FIVE diamonds!" that's fine but don't say others are "resulting" because they are able to think a little more critically than that.