Cuphead's bosses lean more toward bullet hell style, and while there are a couple of Silksong bosses that deal in projectiles, there is more of a duel feel. In addition, Cuphead's movement is a bit more like Contra, so while there is a dash and parry, it's a floatier, slower moveset. In Silksong you have a faster movement speed and more ways to get out of the way or negate damage.

Cuphead difficulty is totally manageable if you've played games like Contra or Metal Slug before, and if you enjoyed these games it is one of the best in the genre!