I would say ARR raids definitely DO give less. These are my totals after yesterday, 1 roulette run of each category, and my alliance roulette was Syrcus:



If it takes a little longer to complete that category, so be it, I guess, but this does seem a little shortsighted considering that ARR raids seem to typically have at least a 50% pop chance when queuing for Alliance Raid Roulette...