It had a whole lot more wrong than "an indicator issue".

That is not to say the guy flying was an idiot, but they were getting contradictory information (and a cacophony of racket from *****ing Betty) from the onset of the pitot's icing over to the point of impact. There was a lot going on. It was dark and they were in pretty significant turb, having jammed their widebody into a radar shadow. Ronin picked a bad night to whip out his disgrace of the base super-stick skills.