My comparison:
Shooting: Ronaldinho
Passing: Ronaldinho (with Latapy not too far behind)
Athleticism: Ronaldinho all d way
Set-pieces: Ronaldinho
Heading: Ronaldinho (by default)
Dribbling: Ronaldinho (Latas might hold his own, but not in de same league)
Sorry to beat down Latas, but really, comparing him to Ronaldinho is taking it too far