Why? Because HK doesn't require any dynamics or phrasing, unlike HR?
My comment, "I find the movement in Handful from a 10th to a 3 or 4 note chord far more comfortable than moving in the HR from a single note to a two note chord.", applies even without considering the phrasing, dynamics, etc. I'm talking about purely hitting the notes in tempo here. There's just a feeling of stability in the left hand when I played through the HK. In the HR, I don't always feel this stability.
Play through both in tempo and you'll see what I mean. Or perhaps, you may find the opposite to be true; everyone is different!
Also, the HK definitely does require dynamics, phrasing, and most importantly voicing for an effective performance. It's just that when I consider the dynamics, phrasing, and voicing for the HR, it becomes so much harder.
Wut. I thought HK also required you to press base notes? Well, how do you mean by "banging", as in, make it extremely loud?
If you played the bass notes in HK like the two measures I'm talking about in the HR, the HK would sound terrible. I mean, sure you may be able to make it work, but I don't see this kind of sound being appropriate.
(I have received a sudden vision of me flattening my pinky and hitting those base notes sideways, in an effort to strike it like a hammer. Does this work?)
Kinda like a karate chop? Some pianists actually do that when they want to produce a really loud sound on one note.
Doing this for either won't work for the HK or HR because of the tempo.