Hi Steve,
no probs about FB - take it easy, you need not to begin with it if you not sure about anything! Was just an idea; it is kinda easier for me to keep in touch there.
For ELP , Wakeman - they are both great and it is, at first , not easy to compare. Wakeman was ( and is ) amazingly productive, I can't even say exactly how many solo albums he recorded. Alone the outcome is worth any respect.
Generally I would still prefer Emerson - due to more complex chord structures, rhythmic etc. It is a bit like comparing Mozart and Prokofiev - who gave more to piano technique. Emerson 's music is by far more sophisticated as that of Wakeman, but the latter had lots of great melodic lines in his works. So...the matter of taste , to some extent...)))
Regards, Andrew