Yes, Martin,
Cuttings from the same tree on the same day, planted, even i the same pot and soil, getting the same water, etc. do different things. Some grow leaves, some grow roots, some both, and some neither. Some are quick, and some slow. It is a bit like having IDENTICAL twins, one with red hair, one blond, one short, one tall, one a boy and one a girl, and yet identical.