I was specifically (maybe not clearly) referring to the state by state predictions. Many times he predicted Hillary would win, but Bernie won in a landslide and many times he predicted Cruz would win but Trump did.
l looked for those states on his website, but (shock) all evidence has been erased.
OK, I found it. And it was 99% chance. Yes, that's a big miss, especially since it wasn't even that close.
But I'm going to have to say he's not guilty of hiding stuff: you can use the menu that says "Michigan" in the middle of the screen and find every other primary/caucus that he weighed in on.
I believe him when he says he called 89% of races correctly on Polls Plus model and 91% on Polls Only (or whatever it was).
I visit the site pretty much everyday and talk about it on a private email list with a couple friends, and my recollection is that his misses were unusual and always worthy of discussion.