"Tiger Pataudi and Saurav Ganguly had the qualities of building teams, but Dhoni took the team the highest pinnacle - we were number one in Tests besides being ODI and T20 World Champions," he told PTI here after Dhoni hung his boots from the longest format.
Dhoni, after India lost the Border-Gavaskar Trophy to Australia at Melbourne, announced his retirement from Tests, citing strain of playing all formats. India is trailing 0-2 in the four-match series after today's draw.
Prasanna said Dhoni may not be a flamboyant and creative captain like Pataudi and Ganguly, but he had the qualities inherent subtly. "Dhoni may not show the flamboyance and creativity of captaincy onfield like Pataudi and Ganguly, but he subtly displayed these qualities on the field," he added.
Asked how does he rates Kohli as the captain, Prasanna said the Delhi-based player is an "absolute combo" of Ganguly and Dhoni, but he should be a little diplomatic, which is very vital for any captain.
"Kohli has all the aggressive qualities of Dhoni and Ganguly, but he should learn to be diplomatic, which is vital for any international captain. It is good to be aggressive with his teammates in the dressing room, but not against the opponents - on the field," he said.
"It came as a surprise to me. Usually captains hang their boots after a series," he said.
Prasanna said Dhoni should have announced his retirement after the Sydney Test as that way he could have guided Virat Kohli in the final match of the series.
"However, I do not want to take the charm of Kohli away as he is also a good captain as he has shown in the first Test against Australia," he added.