OTOH the reason why they didn't normalize to 100 may be to not give people an idea that the measure is linear; seeing a score of 2500 makes you ask 'what does i

OTOH the reason why they didn't normalize to 100 may be to not give people an idea that the measure is linear; seeing a score of 2500 makes you ask 'what does it mean?' whereas if you were presented with 25/100 you probably wouldn't think that it is 'highly concentrated'.