Brother's War was fast-but-not-retarded, unlike ONE. Low-to-the-ground decks outmaneuvered slower ones, with the exception of green-black decks that had the spider and the prototype golem. Blue was a fairly weak color in the format whose best common was Mightstone Animation (which practically needed the 2-mana flying only-a-creature-if-you-pay card), and Red was arguably one of the better colors, with the 1/2 Goblin for 1 being one of the better cards IF you could score enough easy-sacrifice effects.
However, if you were passed the right cards, you could also play mono-colored, with Corrupt enabling black to make for a surprisingly good control deck. The format was actually fairly deep, for all its faults, and has a lot of more complicated interactions and interplay - but, in contrast to the more durdling Dominaria United, was an assertive format where you had to be on the board early. ONE's problem was that the format just had absolutely no fucking depth - GR shitstomped everything in terms of card quality and synergy, and all of the other strategies were one-dimensional. MoM can be described as "pick blue, pull a bomb" the format -- it's not imbalanced per se (red is dogshit though), but it's really not a flavor I like.
Lord of the Rings has been a great format, though. Green is weak but not unplayable, there's tons of different ways to build decks, rares like Galadriel can really change up your drafting priority (wanting more Tempt cards) while punishing people who don't really know the format (like those who would take Galadriel and then take mediocre scry cards over tempt cards). And while it has ungodly good bombs, they don't make up anywhere near the share of rares-mythics they have in the last few sets. Let's not forget the rare planeswalkers in ONE.