Jaws 2 (1978) vs Halloween II (1981)

I don't think I've ever seen this comparison before, but I think it's a good one.  Both are decent enough movies which carry the burden of having to live up to their classic predecessors, neither of which do.  Both also do a surprisingly decent job of maintaining the feel and atmosphere of their predecessors, even with different directors at the helm.

I think I'd give Halloween II the slight edge.