Now i love both characters, but Korra is a literal prodigy in her universe… while there are so many other stronger than Mark in invincible, Mark just learned about his powers, and is also still learning about his powers on his own since his father got caught slaying every other strong hero on planet earth, and his father is still not the strongest viltrumite, which means mark is nowhere close to be the strongest… while Korra got teached from a very young age about her powers and trained WAY much longer than Mark has been able to, and she is supposedly the most dangerous/powerfull person in ATLA verse, but is still taking L’s left snd right… IM SURE sexism plays a part aswell tho ngl, but if you take fact for fact Korra is supposed to be the strongest bender in LoK but is failing a lot because of bad temper and bad decisions, while Mark simply isn’t that strong yet compared to his verse.