When Queen released this album Punk and New Wave were about to change the music that a generation of teenagers bought. So from the beginning this album was unlikely to be received as well as previous Queen albums - and it wasn't.
Certainly there is nothing on this album that matches Bohemian Rhapsody from two years earlier. However, I prefer this album to "A Night At The Opera" over all. For me the anthemic qualities of "We are the Champions" and "Spread Your Wings", together with the stylistic variety of "Sleeping on the Sidewalk" (Rhythm and Blues) and "My Melancholy Blues" (Piano Ballad) is what made Queen such a great band. Sometimes its the little things on this album that I really like, such as Roger Taylors fabulous drum break at 2:48 near the end of "Sheer Heart Attack". If that isn't enough have a listen "Its Late". As the Amazon reviewer said this is the best track on the album. If I had to pick only one Queen track this would be it. Its over 6 minutes long but it has everything you'd expect from a great Queen track. The only quick way I can think of describing it is that they should have performed it at Live Aid - it would have fitted perfectly into the great set they did there.
There are a few weak tracks in my view, hence only 4 stars, but overall this a better album than its given credit for. Any Queen fan will know this already, but for anybodyelse, apart from a compilation this is as a good a place to start if you're buying Queen for the first time.