I think it legit took me 15-20 mins to get it and I was lucky. It's awful, but it's the hardest trial by a landslide so once you get it out of the way the rest is easy mode.
I found Ryu's 10 to be a major pain, and Chun's 10 as well, but a little less.
For some reason the early Dhalsim one where you have to hit the jumping spear into standing light kick drove me crazy. Just finding the right distance and starting over each time was so annoying because of his slow jump. Not as hard, just irritating.
They'll still give a fair amount of players a hard time, but overall, they were much, much better than SF4's, which bordered on impossible for most players. Just the right number too if you don't get any fight money unless you clear them all.