The RTP value is given this way because this is ALL we know about the Return To Player percentages for Real Time Gaming video slots. We know that RTG is offering three 'versions' of their casino product to their customers and the overall RTP ranges from 91.5 to 97.5%. Wish I could tell you a lot more about this but as you most probably know already, there aren't many software vendors willing to share such crucial information with the world.
