MTG Salvation

Been looking over the last few sets of results from various tournaments specifically at mono black devotion which I'm currently building. Wondering why people prefer to play 4 Gutterbones, over Knight of the Ebon Legion? Genuinely curious, is it just because Gutterbones is more reliable in terms of devotion that sticks to the board?

Idk...but it doesn’t tie up mana, either.

The decks are playing Ayara, First of Locthwain and some number of Woe Strider, Rankle, Master of Pranks, Cavalier of Night, and Witch's Oven so Gutterbones fills the role of an aggressive early creature that can also provide some value late game.

That makes a lot more sense actually, thank you!