I wouldn't short change Foles or Wentz here. Carson was the clear front-runner for MVP in 2017. He was playing great!
I actually didn't watch Super Bowl LII because I couldn't stomach another Patriots/Brady win. That's how much faith I had in Foles. He could have collapsed under the pressure, but instead rose to the occasion and won the Super Bowl, out-dueling Tom Brady. I don't believe the Eagles win that game with "MVP" Wentz at QB instead of Foles.