ok... i just ran into dark bahamut and grand summoned the magus sisters, watched about 5 minutes of them doing their overdrive and then it does 500hp damage about 5 times

. i was kinda hoping for about 100,000... AT LEAST!
whats with that? i chose combind powers and their overdrive bars all went, so why so little damage? Cindy does 40,000 with a normal attack!!