Definitely not. Big band would be significantly less, however, if not for crowd funding specific costs (backer rewards, payment fees), and services a publisher generally provides (QA, first party fees). Also, the 8th character counts for way less, since most of her frames were reused from other characters.

I was a designer on the game, and while it's hard to look back and tell you exactly how much time was spent on character specific stuff vs. general features since people's time was often split awkwardly, I'd say the clear majority of resources were spent on character specific stuff. Art was by far the largest team, and worked almost exclusively on character specific stuff. Design was more evenly split, but definitely leaned towards characters. Tech was unsurprisingly mostly other features, but was a small, small team (poor Ben and Rick )= )