The two keep motivating players and are also an integral component in Pakistan's scheme of things in one-day cricket. Their indisposition eliminated the motivation factor and badly disturbed the team combination.
The biggest advantage the Indians had was the former Australian captain's ability of being an excellent reader and analyser of the game as compared to Woolmer, who lacked the hardcore experience of match pressures.
When Dravid was keeping wickets, the Indians had the luxury of including an additional all-rounder or a specialist bowler. But that advantage is gone with Dhoni keeping wickets and Dravid playing as a specialist batsman.