Brady went for over 500 yds, had 3 TDs and they Pats did not punt once. He did his job. Pats defense let them down, especially their DBs. Butler has not been great but he is not Eric Rowe bad.
Two missed kicks hurt too and I think they got the Clement TD call wrong. You could see the ball move but it was not glaring so they went with the call on the field.
Last note, if you watch the hail mary from the end zone angle you will see that a DB clearly popped Hogan at about the 20 yard line. That should have been a penalty and another untimed down. Still very unlikely that they pulled off the hail mary though.