Or we could try having mature discussions that don't digress to personal stabs at each other's composition styles.
From what I can see, a large percent of the public admires Mozart's music because it's all they really know, and they like what they've heard. However, I would trust that most people on this website have been exposed to multiple other composers and styles, and thus, they have the right to take an informed position on what is better. If someone has listened to both classical and modern music and decides, "wow, classical music is waaayyyy better", then by all means they are entitled to that opinion.
Regarding Mozart, I definitely think he was capable of writing bad music. I pretty much despise all of his symphonies up until the 20s, but have any of you ever heard his 39th, 40th, and 41st symphonies? I think it's pretty hard to deny that they're true masterpieces.
I would also have to agree with Austenite that no one on this site has yet written something that can counter the perfection of one of Mozart's masterpieces. Of course, there are many who would denounce the criteria I would use to determine what a "masterpiece" really is, but I suppose I've already written too much.