Yes, and I also wanted to note one feature of the auto-battle (I read about it somewhere): most often, its results are better than in a "manual" battle for a human player. Moreover, it was written that even the strongest players cannot achieve such results; usually, the losses are noticeably greater. The conclusion was that the auto-battle calculation algorithm is imperfect and does not take into account all the nuances - hence the difference. Therefore, the auto-battle (if we don't count "clearing" small neutrals to save time) can, in a sense, be almost equated to cheating. But I think that with experience, you will always prefer to fight enemies yourself. And win! Good luck on the battlefields!
But in the vast majority of cases, somewhere around 99.9%, you will fight manually, at least as well as, or better than, a quick battle or auto-battle, because you are simply smarter than the stupid hero AI.