Indian cricket team batter Virat Kohli, who announced his retirement from Test cricket recently, was often compared to Joe Root, Steve Smith and Kane Williamson when it came to the 'modern greats' conversation. The four talented batters were dubbed cricket's 'Fab Four' and over the years, fans have engaged in a lot of debates over who is the best among the lot. While Virat finished his career as the fourth-highest run-scorer among the four, former South Africa star Daryll Cullinan picked him as the best among the 'Fab Four' because of the kind of responsibility he took in all forms of cricket.