That performance diagram of Orbiter 2.0 vs 1.5 is very misleading, performance is in fact as far as I can tell identical. Classic marketing.
As you can see, they compare Orbiter 2.0 with an Orbiter 1.5 with an old stepper motor that's not been in production since Orbiter 1.0, in fact, all Orbiter 1.5 come with the same motor as the new 2.0.
However, it is slightly lighter and more compact, neither making particular advantage in our printers.
But there is one real advantage; a metal filament exit guide from the bottom of the gears to the bottom of the extruder, this will help performance for flexibles. But my 1.5 prints TPU fine too.