I don't know that I think this is a fair thing to say.
Basically a very similar team went to the finals 2 years ago. Yes we came up short - but barely. If Middelton and Holiday had not gotten uncharacteristically hot I believe we win that series despite not having a good answer for Giannis. I think in many ways this team is better - Booker is better, Bridges, Cam Johnson and Ayton are better. Right now it even feels like our bench is better. Yes CP3 is worse, and we don't have Crowder - but overall I think it is a near wash.
I think a lot simply depends on matchups and luck.
I think the current Suns team is capable of beating anyone. Would they be the favorite, perhaps not, but I don't think we are far away at all. I feel one good trade can put us over the top, and I fully expect it to happen by the deadline, because Jones knows it too, and we have draft picks to use that he does not care about.