From what I've read on both the Medieval Warm Period and the Little Ice Age, the effects were primarily in the North Atlantic, not worldwide. Warming in a very specific part of the globe would not have the same effect as the same degree of warming worldwide. I'll see if I can find a reputable source on the subject.
I take it you're of the "there is no global warming" camp, ECSNorway?
I take it you're of the "there is no global warming" camp, ECSNorway?