Better guitarist?

Jimi, Duane, or Stevie?

Jimi all the way..

he brought new ideas and sounds to rock and roll.
and motivated other artists around him who thought he was the ****. e.g Eric Clapton, Pete Townshend, Paul McCartney..and more.

Jimi.

Love them all.

Hands down - Jimi

It's a 3-way tie!!!!!!!!

Stevie.

Robbie Robertson! (I pick SRV from your list)

It's almost a shame , that nobody today remembers Frank Marino.

Response to vinster,Mahogany Rush were great with Frank Marino.
Back to the Question.
Mick Ronson,Jeff Beck,Alvin Lee, Eric Clapton,B.B.King
Jimmy Page to mention a couple that I think are great guitarists that should not be forgotten.
But If I had to choose between the 3 above I would say SRV.
Seen him twice with Double Trouble.
Totally amazing guitarist,so is his brother who is lead guitarist for The Fabulous Thunderbirds.