Page is an excellent guitarist, all these weird chords he does, and he has an ear for a tune too. His production is a matter of taste (never liked the Zep productions that much, but I'm a minority). He's not in Blackmore's league as regards overall fretboard dexterity, rhythmic precision and the ability to combine weird scales (though Page is no slouch in that department). Page's improvisations tend to waffle after a while, he doesn't stay focused.
But he'd still be a great guitarist if all he had done was that eruptive lead break in Whole Lotta Love (once the beehive buzzing is thankfully over!), that thing is iconic and has a great sound. I never thought much of his Stairway to Heaven solo though, pleasant, what the song calls for, in good taste, but a bit on the safe side. A lot of people could and would have done something similar.
