Haiti :: Martelly Vs Preval - Who was a Better President?

I your opinion, who was a better Haitian president, Michel Martelly or Rene Preval?
Look at this photo... Haitian president Michel Martelly had a meeting with former Haiti president Rene Preval at the National Palace... Preval is the only president who recentely completed 2 terms as president and remained in the country. President martelly spoke to Preval about that and tries to learn from his experience in order to deal with the current political situation in Haiti...