Somehow, the painting soothed him. It verified his fears. But it also informed him that fear was wonderful.
I wouldn't say one is easier or more difficult, but when you're inside a costume and a mask, you have to endure heat - and, often, difficulty seeing. The vision is not very good in a mask. And you have to cope with that, as well as trying to think about this character.
When I used to go to Elvis's house was always a nightmare trying to get into the house because of so many fans outside the gate and he really couldn't go anywhere without sneaking in or doing something because people just wanted to be around him and to be with him.