Starting out as a 4-mana 2/2 is brutal, but as long as Vincent can attack, your opponent is goign to have a hard time ever coming out ahead against him
As linear as Burn looks, there are multiple ways in which a game can play out
Green may continue to be the king of land-based ramp, but other colors have undoubtedly gotten access to new toys for generating mana, either through cheap mana rocks (e.g., Arcane SignetArcane Signet), Treasure production (e.g., Smothering TitheSmothering Tithe, Prosper, Tome BoundProsper, Tome Bound, Grim HirelingGrim Hireling), or slam-dunk ritual effects like Jeska's WillJeska's Will (or, you know, Culling RitualCulling Ritual, if we still want to include green in the discussion)
The real appeal comes from being able to kick Archangel of Wrath for either one red mana, a black mana, or both