We had this discussion not too long ago.
I don't believe Wicked deserved any more awards than those it won.
Major oversights in the past included Urinetown, Parade, Falsettos and Into the Woods not winning Best Musical as well as Contact and Movin' Out being categorized as musicals when they are clearly both ballets. I'd give Movin' Out a little leeway, but Contact had no live music, for goodness' sake!
PS - I don't think Follies deserved Best Musical and I'm a little iffy on Sunday in the Park With George. I'm not a fan of La Cage, but the second act of Sunday is incredibly tedious and difficult to sit through. If I don't fall asleep during "Children and Art", then I nod off during "Move On".
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian