The paragraph about Back to Basics makes it sound like it was just better than Blood Moon, but it has 2 major weaknesses:
1. It can be killed via REB which is especially bad against red delver decks like Grixis who don't have an answer for Blood Moon once it resolves. Thus it's not as much of an "I win if this resolves on an empty board" card.
2. Decay decks they don't have to constantly keep up BG when they fear a Blood Moon. Here too it slows them down the game until they have a decay while Blood Moon has the potential to just win the game when they don't have basics out.

That said Blood Moon of course renders your fetchlands useless. With Predict allowing you to plow through your deck Blood Moon seems like the better option though.