It appears that you are not aware of the consistent performances put up by Gautam Gambhir in T20 and ODIs ever since the 2007 T20 world cup matches in South Africa. Besides he is a regular opener for Delhi and this makes the Sehwag-Gambhir opening combination better than those of the remaining 7 teams in the fray.
Shikar Dhawan played consistently in both matches. Kohli, the U-19 captain is no push over. Shoaib Malik will soon join Delhi Daredevils and so will Tilakaratne.
In the whole tournament so far, it has been performers rather than reputationists who have done good for their teams. If for KKR it was McCullum rather than Ganguly or Ponting, for CSK it was M Hussey rather than Hayden or Dhoni.
