But it depends on who is really puppetering the character and who is voicing him. I can really recognize a Character performed phisically by Jerry Nelson, on Martin Shorts episode of MT, Jhonny´s Ma is clearly performed physically and by voice By Jerry, and on the Daryl Hannah episode I think its Jerrys voice but not puppetering, because its not Jerrys mannerisims on the puppet and its more active in terms of movement. And in certain season two episodes same with Statler . Its the same on Frank characters being performed by someone else while Frank dubbed the voices, Frank mannerisims are very recognizeable for me, and I can tell when he is performing the puppet or not. Its very clear in MFS.