It was based on a ex-AMS fare which is gone by now.
If you are 62000p short of plat, maybe just look for the cheapest C-fare from europe to asia and then exchange awardpoints for tierpoints to get the last ones?
If you take one quick run HEL-ARN in value you would be gold (1000+1000 + 10%), and then get 15% extra on the last trip.