Almost certainly. Cap2 and IM3 **definitely** got a boost from Avengers massively overperforming, there's no doubt about that.
I brought up pixar earlier, because like the early output of that studio it's currently VERY difficult to see how Marvel puts out a bad film from this point earlier. They're turning D-list franchises no one wants or has even heard of into cinematic gold.
DC's track record is absolutely horrific in comparison. They have as many misses and failures (Jonah Hex, Green Lantern, Superman Returns, Batman and Robin) as successes. Marvel is 10 films in since 2008, and the weakest movie they made is incredible hulk- which is still a very good film compared to the industry average.