So let's change the wording then - since nobody knows for sure, it's highly probable that a fully healthy Cavs roster wins the series last year against the Warriors. They were literally seconds away from going up 3-0 with a Kyrie coming off an injury then going down completely because of one, Love out, Varejao out, Miller out, Shump playing with a strained groin, so you had a Cavs team with just Lebron, Delly, J.R. Mozgov, Thompson - followed by a bench of James Jones, Josh Harris, Brendan Haywood, Shawn Marion, & Kendrick Perkins.
So you're talking about 4 guys in your regular rotation out or injured then a bench full of guys who don't play. That would be like Golden State without Klay, Draymond, Bogut, and Livingston with Iggy playing with groin strain -- yet it still went six games.
It can't be understated how much having two other guys who can carry the load on offense does for LeBron's game. We've seen it. When he has two other players that can go for 20+ on average he can focus more on defense, rebounding, and assists where his game becomes uber-efficient. You're also adding two more playmakers, two more floor spacers, another 10+ rebounds, etc, etc. and that's just from Kyrie and Love.
So yea, the Warriors were motivated by that and that's why they come out and win 73 games this year; Curry wins another MVP, and meanwhile, you have the Cavs who are 12-0 when their big three play in playoff games and peaking at the right time. We'll see how it all plays out!