It takes a little more corn sugar to get the same gravity as you would with cane sugar. I looked but can't find an article with the numbers - sorry. I think I remember that the factor is about 0.90 or 0.91. (Just checked Brewers Friend - an example showed a 0.91 factor.)
Also, I've read that when used as one of the main fermentables, the flavor is different. I haven't compared, so I can't say for sure. I've used both for priming and can't tell any difference.