Vieira is an elite BJJ specialist with very high takedown volume (4.18 TDs per fight) and strong offensive grappling metrics against established UFC competition. McConico has no proven UFC-level data, offering major uncertainty and suggesting a significant experience and skill gap, especially defensively on the ground. Given Vieira's historical path to victory and McConico's lack of demonstrated takedown defense or submission awareness at this level, an early-to-mid fight submission is the likeliest outcome.