The Saudi loss was hilarious, I admit, but I would still write it off as a bad day for Argentina and awesome day for Saudi. Everything just clicked for them that day.
However, to say Netherlands or any other team wouldn't lose against them is wrong when we've seen upsets from otherwise mediocre teams throughout the whole WC - Japan and Morocco to name just two.
And Argentina still has Messi. Even at 35 his vision can change the game in an instant.