I don't think it's that vague. I've lived in both Europe and the US, in several places, and both have a wide range. What I will say is that I don't think Europe is better off for the times that it has thrown up roadblocks.

Also, slow moving, stable regulation can be better than arbitrary flippancy, but that doesn't mean it directly incentivizes investment, it just means the investment already incentivized by demand can proceed with more confidence that it won't have the rug pulled out from under it, assuming the regulations didn't discourage a tentative proposal in the first place.