The config files might work, if the underlying versions are not too different. If you are using a different DE in Mint, of course some specific config will have to be done, and some config files will be useless. Some will almost certainly work - media players, that sort of stuff. If you will be using the same browser, that will work.
When I do something like this, I generally copy over config files on an 'as needed' basis, just to keep things less cluttered.