There is not likely to be any appreciable difference. Somebody got it right saying the barrel of the string needs to be pressed against the bridge. I think it's the pressure that matters which is what we see with a tailpiece--no pin but the tailpiece holds the end of the string and the string passes over the bridge with a good deal of stress between tailpiece and bridge with as much string as possible making contact with the bridge to transfer the maximum volume via the lower angle of the tailpiece. I doubt the pins have anything more to do with the sound than a tailpiece does. It just holds the string while optimum pressure is applied to the bridge by a optimum length of string.