These are pieces that either aren't great pieces of music to begin with, aren't played well by anyone else, or both.
Liszt Hungarian Rhapsodies and Spanish Rhapsody, Certain transcriptions (such as Gounot Waltz De Faust), GGC, Polonaises (Cziffra) Transcendental Etudes 2,5,7,8 (Berman)
Rameau and Couperin (Cziffra)
Moszkowksi showpieces, weaker Scarlatti Sonatas (Horowitz).
Hummel Rondo op 11. (Friedman)
Ravel, La Valse (Gould)
Chopin - Weaker Mazurkas (Horowitz, Friedman), weaker Waltzes (Lipatti)