Just goes to show you there's more to it than speed, I think. Clearly stealing bases has a major skill component, but the other metrics of baserunning success that don't consider stolen bases show Hamilton is quite a bit ahead of Engel as well. That being said, those same metrics would tell you Engel is a very good baserunner but Hamilton is just special.
That being said, the difference is more dramatic defensively. Hamilton is a very good defender but Engel is really special and has added more value in many fewer innings since Statcast started keeping track.