Not JB, but I can take a stab at answering your question.

Rombauer was fast(ish) at 2. Ran back to the number first out at 3YO, then made modest improvement at Keeneland. Another move forward was not out of the question.

Unbridled Honor wasnt quick at 2YO, came back as a 3YO and took two starts to pair the 2YO top, then moved forward 5 points next out at Keeneland. Another move forward off that effort was unlikely. Further, the improvement came over a sloppy track, which can at times often produce wonky figures (generally speaking, not specifically this product).