Links can be tough, my advice is to start out super campy, others tend to think this is the norm for Link mains, it's obviously not. Use this like a jab in the first round of a boxing match, to FEEL OUT THE OPPONENT. Chances are, they want to show that their Link is better, so they may want to do something intimidating, like a grab combo, or a jab cancel-to-smash. Just play defensively until you know their capabilities in terms of offense and reads, then look for an opening in it. When you get one, shatter their expectation of being super campy with a nice jab cancel to grab combo, then look for an fast stock finish, like a spike or gimp. At least, this is what I would do in this situation. Speculation, but I think it's accurate, unless they're a REALLY GOOD LINK.