I don’t have evidence of this but I believe the owner/operator of the site is pro Israel and this bleeds through into the ratings, which are not produced in any objective or repeatable fashion. It says Times of Israel has not failed any fact checks, but it clearly doesn’t investigate this in a systematic way. I personally reported one particularly egregious and obviously false headline some months back and never heard anything.
It lists the fact checks the Guardian failed (totally fair), but overall I would say most similar websites rank them highly for factual content and for good reason.
For stuff unrelated to Israel I think MBFC is pretty solid if a little unclear and opaque in it’s approach.