Easily Froch, anyone who says otherwise is an idiot and doesn't know boxing tbh.
Vitali's 3 best career wins are over:
1. Adamek, a blown up LHW, aka Chad Dawson's leftovers.
2. Sanders who was terribly out of shape, nearly 40 years old and had tired to become a pro golfer
3. Peter, a guy who got schooled by a brain damaged, obese blown up MW in Toney in their 1st fight, been dropped by guys like McCline, hurt by Maskaev etc.