I think you'll find it was the other way round. CPFC2010 on BBS stated the away allocation at The Amex would be the same as the league game before this announcement was made.
After the Holmesdale Fanatics coach going to Blackburn was stopped by OB after a tip off and they found a large quantity of booze , a knife , flares and 2 fans in possession of coke I think the restrictions on Palace fans will be the same.
The loyalty points threshold must have been determined by the number of STH's with LP above those figures and the percentage the club think will travel up to Smellhurst. The only positive for non STH's and newbie STH's are the games will be shown on Sky.