Sorry but I disagree with you mate, losing on others doesn't necessarily mean you and your team don't have the championship caliber team.
That's correct, but did you noticed that Giannis performance during the Raptors series is not that effective, I think the problem is not Giannis that time, its the coaching staff because they can't seem to find a strategy to help Giannis when he is trap by 2 to 3 defenders.
It's just so happened that other team (like Raptors) got better strategies for winning. Here's another example, look at the present situation of GSW, they are at the very bottom. So it's fair to conclude that they don't have the caliber of a true champion? Of course not!
Can't compare the GSW now because they were playing undermanned, Bucks played the Raptors with a healthy and complete line up, warriors now loss Curry, Thompson, and even Russell was also injured, during the playoffs also, they loss Durant and Thompson.