Danzo was more powerful than Sasuke. Sasuke only won because he had the advantage of both Karin and Madara's presence. Karin healed Sasuke from a fatal injury and Madaras presence prevented Danzo from using izanagi on Shisuis eye. If Sasuke was alone he would have been fucked.
Danzo Vs. kakashi there is absolutely no question about it. Kakashi would get raped.