User blog comment:Mccray316/Who will the Black Widow end up with: Hawkeye or Captain America/@comment-4829046-20120619085449/@comment-5252612-20120710044529

well in earth's mightiest heroes,it is based on the comics on half/most of it. for example,the start of season one is similar to how the new avengers (comics) were formed,a big prison break out. also,in season 2 the opening "and there was a day like no other when blah blah blah etc." is part of the opening of most of the "new avengers" comics.

but not only earth-616 but the ultimate comics etc. the new costumes in season 2. but that's off topic.

and for ultimate avengers it is based on the ultimates. 'nuff said from me.

conclusion:i haven't read "the ultimates" so the ultimate avengers could be based on the ultimates and earth's mightiest heroes is definitely 616. and the avengers movie from this year has elements from both universes,so the answer is unclear in earth 1{insert many nines here}