The man's opinion seems legitimate. The only issue here is trying to combine various opinions into some sort of numerical aggregate.
Tom Chick is fairly notorious for his somewhat harsh reviews. For examples, search for his reviews of Deus Ex or Gears 3. On the other hand, he gives much praise to titles like Portal 2.
He seems to favor games that focus primarily on new gameplay experiences, and do their best not to take themselves too seriously. In his review of Uncharted 3, he praised the story-telling and characters, but ultimately gave the game low marks for what he considered to be unfulfilling and linear gameplay.
It makes sense that a game like Journey, one that emphasizes atmosphere and presentation with little regard to anything else, wouldn't be his cup of tea.
