Before you make up your mind about who has the best technique consider these two:
First, the late Glenn Gould set a control standard I'm not sure anyone has surpassed. On his Bach recordings (played without pedal) you can hear absolutely perfect duration control of every note whether legato, staccato, or between. He gives each voice its own touch using duration, and so separates them for the listener. Truly amazing. Sustain pedal crushers disguise all their inadequacies in this area.
Second, listen to Byron Janis/ Charles Munch recording of the Rach. 3rd concerto. Blistering pace, yet every note is annunciated and every phrase perfectly shaped.
I can't think of any recorded examples of this, but Rachmaninoff was legendary for his half pedaling technique, allowing effects many other pianists never even think about.