No, that's fair enough... I didn't remember that.
I also think that we can single out games here and there that individuals have cost us and, in a vacuum, prove anybody is shite. Ali's our greatest ever keeper (imho) and he's cost us a few biggies too. There's still not another keeper on the planet that I'd want in our nets, though. And big Virg has cost us goals in big matches before with his 'relaxed' defending at times too, but he's still the best of his generation.
I think that, as utility, semi-permanent back-up type players go, Joe is as good as any team that haven't cheated their way to the top can wish for. Doesn't make him Messi, but he's been a lot better for us down the years than some give him credit for. He's also been, unfortunately, a magnet for abuse that other players are somehow immune from.