As a comic fan I can say... yes mainly cause of what Avenger's III might be building up too with all the hints and easter eggs. Avenger's two will be good but Ultron not as impressive as the coming hint of The Infinity Gauntlet.
At the rate they are doing them and the quality of them now. Hope not I needs my Runaway's I want a Secret wars or Civil War Movie two parter it has to be two parts to detail a lot of it, I want a huge Epic Avenger's vs X-men movie cause that star power and performances might just reach above and beyond some. (okay that would be pure wish fulfillment but could you Imagine Sir Ian ckellian, Patrick Stewart with Jackson and Robert Downey junior? It might be more awesome then words)