OK, jk, there's no problem. But still.
Why do people think lower in level of the Grieg Concerto than, for example, the Chopin Concerti or the Liszt Concerti or Rachmaninoff 2?
I can see why Chopin is thought of as higher level, because his concerti are uglier (except for his Concerto #2

), but why Liszt? Why Rachmaninoff?
Is it really easier, or is it just way too famous, so it's played by way too many lil' kids?