I never said that. You need to be able to lead and most importantly be able to protect your village when in crisis. I'm not dissing on Kakashi, but all the other kage were able to deal with the meteor. I mean it was even sliced in half and Kakashi did nothing but stare. Tsunade most definitely could take out the other half or at least knock it away in the opposite direction. The woman could literally smash down humanoid Susanoo, a highly durable defence. Anyway, Tsunade has proven her importance as Hokage, what has Kakashi really proven since becoming elected?