It’s a bit early to say that the US is the best team in FIBA but you could probably say this: with the arguable exception of Canada, no one is playing with more confidence.
The US took care of Greece with aplomb, winning 109-81. Beating a very competent team by 28 is a good sign.
Team USA won this one largely on the foul line, outscoring Greece 30-8 from the charity stripe for a 22 point advantage. It wasn’t a big scoring day for either Brandon Ingram or Paolo Banchero, not that it matters. Ingram scored five and grabbed three rebounds while Banchero had eight, with six of those coming from the line.