i'd make a few disagreements with that statement.
Orchestration: fair enough, you prefer beethoven. id have to go for mozart because of his wonderful knowledge of all the instruments, and how to write well for them, and the wonderful way he makes use of them. but i heartily agree that beethoven was great at orchestration too.
Memorable melodies, id say mozart again.
beethoven has ode to joy, 5th symphony, fur elise. that's about it.
i take it by memorable melodies you mean ones the general public know well, because he has far more than those 3.
mozart has the andante from piano concerto 21. eine kleine nachtmusik. piano sonata 16 (facile). possibly marriage of figaro overture. queen of the night aria. symphony 40 1st movement. probably some more.
btw, if you disagree, ive heard most of those as ringtones
oh yeah, and for beethoven moonlight sonata.
but on the whole, id say mozart has more.
accessable. well some from each composer. probably mozart more.
but accessability is nothing to do with being a great composer. it maybe was at the time, when he had to compose to please certain people, but we're a different generation now, so accessability isnt a measure of greatness.
structure... i dont know. theres just something about the structure of the first movement of beehoven's fourth piano concerto that annoys me.
but apart from that his structure seems good to me. obviously he made a lot of innovations, so il give this one to Beethoven.
Mozart's structure always seems to be perfect to my ears, but he didn't make the innovations that beehoven did/ (some say that makes him greater, but come on, Beethoven hasnt got any points yet)
Counterpoint.... well Beethoven has the Grosse Fugue, and the Hammerklavier sonata, but Mozart has the Finale of the Jupiter Symphony, and finale of piano concerto 19, and the C minor fugue for two pianos (attached)
Im not sure...... maybe tie. im not familiar enough with both the composers' contrapuntal works to say.
Innovative, ok, yea Beethoven.
so thats 3:2 plus a tie.
btw, i included the midi of that mozart fugue i mentioned, because i dont think many people have heard it, and it really is good.