Moro vs Broly

"you'd be a gnat to me at full power-"

Broly:

Broly for now....

Current Moro wins. He can keep up with current Omen Goku, which is more than enough to run rings around Broly until he eats all his energy.

I see no reason why current Moro couldn't just drain Broly, tbh.

Broly likely isn't fast/agile enough to dodge the drain(like UI Goku did), and he definitely doesn't have enough spirit/ki control to prevent it either.