Ryan missed the rebuttal:
“Mr Vice President, my policies are almost identical to President Kennedy’s while your policies have very little in common with his.”
The truth is that Kennedy’s policies, especially his economic policies, are much more similar to Romney/Ryan policies than to Obama/Biden.
If Kennedy was alive today and had the same policies as he did in 1960 the democrats would be calling him a far right extremist.
Let's face it — if JFK were alive now, and not utterly senile, he'd say and do and think the same things the rest of his family says and does and thinks.
And wrapping one's self in any Kennedy's mantle wouldn't necessarily appeal to a lot of Republican voters. So Ryan was right in not making more of the JFK thing.