[quote=@Fabricant451]
I wish all mods were demonstrably better than their base games. [/quote]

Really good mods that a lot of people prefer to the vanilla game are not an unusual phenomenon. There are various CKII and HOI IV mods (Kaiserreich is notable in particular) that totally convert the game to a different world and which are the favoured mode of play by a lot of hardcore fans. The difference is that the Kaiserreich mod for Hearts of Iron IV is free, and the New Vegas mod for Fallout 3 had a triple-A price tag at launch.