Let's not confuse the issue of which is better from the pilots' viewpoint. From the consumer's view, NJA and Marquis charge slightly more for an Ultra than they do for the 400XP. Therefore, the Ultra is considered an upgrade.
From the owner's or cardmember's standpoint, end of discussion. I can tell NJA for dozens of reasons why I think the Excel is a better a/c for me than the Hawker 800. But the Hawker costs more, therefore, it is an upgrade (P.S. - I have told them that when flying with my family do not upgrade me to an 800XP).
Fly safe.
From the owner's or cardmember's standpoint, end of discussion. I can tell NJA for dozens of reasons why I think the Excel is a better a/c for me than the Hawker 800. But the Hawker costs more, therefore, it is an upgrade (P.S. - I have told them that when flying with my family do not upgrade me to an 800XP).
Fly safe.