I know this is a popular thought, but really if you look at their Avs' tenures you'll see differences. Grubi was a net positive for the team and wasn't perfect, but never shit the bed to George's level. George is a net negative and falling apart in front of our eyes. Now Grubi in Seattle... he's played pretty bad most of his tenure with only flashes.
IMO Grubi was the definition of purely average starter here. Not a guy that'll win you much, but he doesn't actively hurt the team every night. George is a bottom 5 level starter that actively hurts his team on most nights.