not as you would think
death is death , danzo was doing what he thought was best . he did away with the uchiha for the good of the entire leaf village it is true that that's a bigger sacrifice than sakura's and kakashi's life but these are two people that have backed and cared for him during the early stages of his life and look at how fast he was willing to let them be done away with , but by the same token he murdered danzo for making a sacrifice in the same manner
either way his opinion on saukra's and kakashi's life is extremely hypocritical