Is godot better for 2d game development then unity? why? what about big projects and co-developing?
I would say yes, since i think unity doesnt have a base 2d setup, you would have to basically setup 2d in 3d.
Big Projects shouldnt be a problem for 2d in general, independent of engine.
co-developing should not make a big difference as long as all sides are familiar with the engine you end up choosing (and obviously use some version-control-system).
In my personal opinion godot is way better in aspects of user experience and the only way godot might be worse then unity is when you go for Big 3d projects with realistic graphic