Famitsu scores are known to be mostly irrelevant for the west. But today the XCX score (34/40) has created some polemic about it.
Well, here we have some comparisons between famitsu scores and western scores.
Famitsu Metacritic
Resident evil 6 39/40 (97.5) 67
Final Fantasy XIII-2 40/40 (100) 79
Demon´s Souls 29/40 (72.5) 90
Sonic 06 29/40 (72.5) 46
Assasins creed China 34/40 (85) 67
Watch Dogs 36/40 (90) 78
Xenoblade Chronicles 36/40 (90) 92
Sonic Lost World 36/40 (90) 63
The last Story 38/40 (95) 78
Uncharted 3 35/40 (87.5) 92
Raymand Legends 34/40 (85) 92
Xenoblade Chronicles X 34/40 (85) ¿?¿?¿?
Should we really trust in famitsu scores?
(BTW I think a 34/40 can be a good score, just see Uncharted 3 or Rayman Legends, they have the same score and they had amazing reviews on the west)