Mistress-of-Deceit has no cheat flag?
Mumblefratz has no cheat flag?
You're correct that neither of these games are cheat flagged.
However you may remember about a year ago we had a big fuss about the use of Dread Lord opponents. Although using Dread Lord opponents did not cause the game to be cheat flagged it was eventually decided after much grief that using Dread Lords was not acceptable for a number of reasons, most notably because they are essentially an unending source of cash that's otherwise not available in a game along with the fact that Dread Lords neither research nor do they colonize anything beyond their initial colony ship.
Finally after Kryo went public on his thoughts that he felt using Dread Lord opponents was essentially cheating KP agreed and so essentially by agreement among what was left of the MV players at the time it was decided that games using Dread Lord opponents would not be counted as MV legal games.
All of that caused quite a fuss at the time and I'm sure no one really wants to revisit this discussion. Suffice to say that although Maiden's 1.55M game was a major accomplishment for a number of different reasons regrettably he had started the game prior to the decision that Dread Lord opponent were not acceptable and so had used Dread Lord opponents in that game.
That is why KP listed the Maiden's 1.55M game as "not MV legal".
As an aside Maiden's game is a far cry different from Harbourne's or SpaceTimer's games or in fact from a game that receives a cheat flag. If I'm not mistaken Soul Sole has proven without a doubt that the scores achieved by Harbourne and SpaceTimer were not even theoretically possible and therefore definitely required the use of a hex editor to crack the checksum protections that are in every MV game.
Maiden's game was technically legal at the time he started the game, it was only while the game was in progress that it was determined that Dread Lord opponents were not acceptable. It's for this reason plus that fact that there were a number of other innovating strategies in that game that make it worthy of note even though technically it's been determined to not be acceptable for MV play.
Given my position on the use of Dread Lord opponents it should go without saying that no Dread Lords were used in my game. Given Kryo's and KP's statements at the time that such games would be unacceptable it should be assumed that no one today is using Dread Lords opponents for any MV game even if they do not generate a specific cheat flag.
Actually I think everyone here today lived through that time period and should therefore already be aware of everything I've said here. If not then this explanation should be sufficient and there should be no further need to continue discussion of a time that had more than it's fair share of unpleasantness.