Well they might well be similar in age, but fer chrissake don't deny that one looks a damn sight older and more rickety than the other. This does matter. I wish Joe Biden well, but rest assured that millions of us outsiders look at him and wonder how many more times he'll stumble, fall over, be hesitant, etc., and whether Trump will be honourable enough to cut him some slack in the next fourteen months. I think you know the answer.