This is because you are not actually watching a replay. When you do watch a “replay” what happens is the servers recreate your battle by duplicating your troop/spell drops in real time. You are actually watching a “live” attack. Every once and a while, the AI will do something just a little different in the “replay” and this makes it appear different from what actually happened. This is also why there is no rewind button.
Last edited by Bigdome757; August 15th, 2018 at 08:26 PM.