Yes, It is justifiably true that AEO can earn you good bands as compare to British Council IELTS. The reason is simple, AEO is new Organization and it needs attention and more candidates , yet British council was first to take IELTS. But keep in mind AEO is expensive than British council. I took IELTS in 2008 and acquired 7.5 over all. If if you prefer quality go for British council, otherwise if you are weak in English , and you only need higher bands to get accepted in University then, AEO is for you. However, I always prefer British council which is tough and hence check your ability to to use English much deeper.