The original Sony PlayStation did not supplement any other Sony system, so you are missing the point of the thread. A "Pro" console would be one released in the same generation to improve the original console in some fashion.
Even if we ignored the framework laid out by the OP, the PS1 couldn't match Virtua Fighter 2 running at 60fps at 704x480 resolution. The PS1 was good because of its cheap price and that it could push crappy 3D for its time, which everyone thought they wanted in the moment, but the technology really wasn't good enough yet for 3D. Every console in that generation had severe limitations in some aspect or another.
I can't remember if the PSOne was released before or after the PS2, but that wouldn't matter since it didn't improve upon the PSX in any significant way.