There is nothing really easy about Mozart except the sight-reading. The notes of K545 should be pretty accessible. You don't have to go at breakneck tempo. The difficulties lie in the transparent quality, the required smoothness, and the fact that every bad note sticks out like a sore thumb.
I hope you're not saying that other composers (Liszt for example, or Debussy) are easier because nobody will notice if you hit a wrong note?
Not easier, Mozart is as hard as them though.I think we're all advanced enough to have dicthed the idea that the main work for a pianist is hitting the right notes at the right time. What really make a piece hard is the rendition, the interpretation and the musicality. So each composer has its own paculiar difficulty. In Debussy for example is the super legato continuative spatial sound. With Mozart is the contrast between the dynamic of the different voices (expecially within the same hand) So the point I'm making is not that Mozart is harder than others but that considering him easier than others for the simple fact that there's little blankness in the sheet and the "notes are easier" is pure nonsense.
This is one of the most evil and deceitful pieces I have tried . It looks very simple but don't be fooled it's not.
He gave it the name itself. It was meant to be some sort of exercise to beginners, so was the twinkle twinkle-variations. But the sonata is not that hard, techniqually.. But since everyone sais Mozart is the hardest composer to play well ever, I guess it's a hard piece anyway...