Medusa West has a straight first drop, East doesn't.  Dive loops are angled differently.  East has a cobra roll, West has a "sea serpent."  West has a flatspin directly after the block, East has a helix.  West doesn't have interlocking flatspins, East does.  West has two helices, East only has one.   
 
I think that's about it, anymore questions, I'll try and answer 'em.  :) 
 
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