There is no way I could say Dickie was better but he was his equal or very close in those 70-71 years. Dickie's writing of "In Memory Reed", Blue Sky, Southbound, his playing on at Fillmore on Dreams, Hot Atlanta, One Way Out, Mountain Jam, and even the second solo on Statesboro Blues were great and he held his own. I think Warren is better than Derek Trucks or I prefer. I love both.
Duane was great, go listen to the Derek and Domino Album, the only songs worth a **** were the one's Duane played on, Layla, he wrote the introduction, the slide coda was maybe one of greatest solo's of all time, Little Wing, Why Does Love Have to be So Sad,Duane is rumored to play most of the parts and was instrumental in writing the fast, compare him to Clapton and he is as good or better. Keys to the Highway, come on. He is the star of the show. He conveys Eric's mood and parlays into album.
He always said he played Gibson and Eric the Fender on this album, some say Eric was so strung out on drugs and so whipped over Patti Boyd that he could not even get in mood to record, sitting around and Duane came out and tore into them and lit the fire. Tom Dowd said no Layla without Duane. Eric was an alcoholic and junkie at that time. Duane taught him slide and also made these guys pull it together.
Hey Jude is said by some as greatest guitar solo ever that he played for Wilson Pickett. The English guys all said this was greatest up to that time.
Boz Scaggs and him teamed up with some great work in Muscle Shoals, The Weight with Aretha was pretty awesome work. Duane was only in mid 20's so his body of work in 4 short years is incredible.