Not even close to being able to compare them. The core aspects of those games were already done and usable. When EC was announced and people started buying it you were not buying a workable game, You were backing the publisher so they could try to make the game they wanted. Those games were already playable and it was early access. EC was not early access but part of the packages granted you it when it was available with what ever the product was to be. There is a difference between early access and Backing an idea.