Clapton had maybe 3 great albums Disraeli Gears, Best of Cream and the Blind Faith Album. These were his shining moments. A few good tunes after that but not stellar musical breakthroughs i.e. Layla.
Beck is technically great but never seems to get outside the clean sustain thing.
Page has left a musical trail which stands far above the other two for longevity and interest by the public. He has created a larger pallette of musical ideas and sounds. I think he and Jimi Hendrix get my vote for the most defining musical ideas, sounds and guitar playing styles. Then would come Clapton for the speed increase of the pentatonic scale in rock and blues. I would put Van Halen after that. He broke some new ground with not only notes but sounds.
There are a host of technical players who, although fast, never made the jump to great writing or a unique sound. Steve Morse, Johnny Winter, Rick Dehringer, Al Demeola, Rich Sanbora (sp?) Host of others here. There is nothing more boring than a million notes all over the neck. This style of playing is what killed the guitar solo in modern music.
Where Paige stands out is creating songs with just the right amount of guitar.