I may be speaking out of turn, but I think it is safe to say that after 25 years(and change) "What's so Funny About Peace, Love, And Understanding" is an Elvis tune.
I have to disagree. It's like with Jimi Hendrix and "All Along the Watchtower". It is the definitive version, yes, but it is still Bob Dylan's song. Same with PLU - EC will forever be linked to it, but give credit where credit is due - to the writer.