Thanks for the answers. Since I own a tablet for drawing, I might actually try myself at editing and look how that goes. I was always a little discouraged by editors saying it's ultra hard and time consuming work. It probably still is even with a tablet and I'm going to give up like 10 minutes in but oh well.
I'm in the no tablet club as well, but I imagine you can get similar or equal results with some sense of artistic skill. I don't have that either though.
I'm honestly pretty sure you can't, at least when using the freer tools like brushes. That's just my experience with drawing though, editing might be way different.
Anyways, my respect towards editors certainly just grew a lot.