While this is certainly an interesting discussion, the main question has not been answered at all. What are the limitations of C2? Not from an imagination perspective, or even a capability perspective. What are the limitations on number of objects, number of animations in a sprite, number of sprites overall.
For example, in the resulting javascript code, there are things declared such as:
var MAX_VERTICES = 8000; // equates to 2500 objects being drawn
var MAX_INDICES = (MAX_VERTICES / 2) * 3; // 6 indices for every 4 vertices
var MAX_POINTS = 8000;
These hint at some kind of limitation as it relates to objects/vertices.
So to rephrase the question: What are the limitations of C2 as an HTML5 game versus a Windows EXE? Or are they the same?