[falcolas]

Well, kinda? For example: smoking. You cook it for a long time at a low heat, but that's more about heating it up slowly as opposed to bringing it to a temperature and holding it there. And ultimately you (well, you're supposed to) gauge its doneness by its temperature; smokers still follow the "the vessel is hotter than your target heat" rule.

[jayd16]

I would think a slow cooker is a good example of sustained temperature making a big difference.