Dear @signode brother. You are comparing the top speed and fuel average of this bike with Sprinter. But you are not bringing the whole equation into account. GD-110 weighs 108 Kgs in comparison to 91 Kgs Sprinter. And anybody will tell you that 17 Kgs difference is a lot. Furthermore GD-110 has 17" wheels whereas Sprinter has 18", bigger wheels also helps in getting the top speed up.
And a 108 Kgs. bike with 110 cc engine doing 95 kph and still manages to do 40 kpl on 17" wheels is very impressive performance in my books.
Just for a moment forget that this is a 110cc bike and then analyse the performance of this bike. Sab ne bas aik hi kuttay ki dum pakri hui hai k 110 cc hai to average 60 kpl hona chahiye.