I really think you need to tone down the effects in your videos, mate. It's something a lot of people always complain about in the comments of all of your videos and I think you should take it into account; it smothers your animation.
Plus the title is a bit misleading, this should really have been Aquaman VS Namor. Ultron only appears in the post-credits scene. Title baiting like this is something else I've seen people complain about, like in your Jurassic World video.
I like your videos, and I don't want to sound mean, but I really think you need to listen to your audience. As ever I'm looking forward to the next installment, but I hope you might start to take some criticisms into account.
Edit: Funmi, this is part of a DC/Marvel crossover series.
"Nothing goes down 'less I'm involved. No nuggets. No onion rings. No nothin'. A cheeseburger gets sold in the park, I want in! You got fat while we starved on the streets...now it's my turn!" -Harley Morenstein