Each to their own, inclusivity and all that, but I've always found a little sister to be far more interesting than a big brother, but not too young obviously, modern inclusivity doesn't go that far in my book. Anyway, surely an 851 is an older sister, having been born earlier.
As Nasher says, "big brother" - in what way? whole can of worms here, if meant as in engine cc, well an 851 SP2 was 888? what's a few cc between family anyway..
It's in a bar on yas island, Abu Dhabi, if anyone's wondering , think it's just a standard 1098, rather than any special race bike