Can’t give you an answer on how it compares to a Corepad mat as I’ve not used that particular mouse pad. In fact I had never heard of it until you mentioned it.In the only review I could find of the Corepad mat it rated 6.5 out of 10.I have written on a single piece of paper placed on top of the mat, but I was careful not to apply too much pressure. It didn’t leave any indentations on the pad.The mat is quite firm and I think you would need to apply a fair amount of pressure to leave an impression on it. In fact I think I will test right now.Interesting result, I just wrote on a single piece of paper and applied enough pressure to tear the paper but it didn’t leave a single impression.Hope this answers your query.