You better believe it ... so says Chris Webber, who tells TMZ Sports the Dubs are just too damn good to lose that fantasy matchup.

The 2019 All-Star game starters were announced Thursday night ... here's the East:

-- Kyrie Irving, Giannis Antetokounmpo, Joel Embiid, Kawhi Leonard and Kemba Walker

Here's the Warriors starting lineup:

-- Steph Curry, Kevin Durant, Boogie Cousins, Klay Thompson and Draymond Green

Webber does a great job breaking down why the Eastern Conference All-Stars would LOSE if they took the court against the Warriors ... and he's pretty damn confident about it.

Of course, Webber used to play for the Warriors -- but there's no bias here. Webber's hittin' us with truth bombs.

As for the Western Conference All-Stars ... here's how that team looks:

-- LeBron, KD, Steph Curry, James Harden and Paul George.

That's scary.