If there was such bias, he'd have given Lucas-tier usmash and dsmash.It is a good think Lucario is in the air most of the time. If he isn't on the ground that much, it reduces the chances of him actually tripping. I am starting to think Sakarai liked Lucario a little bit too much when he played through Diamond and Pearl, I am starting to see a bias.
Not that I'm complaining. I love the invisible hitboxes of deceptive doom.