proper gear shifting
 

doea anyone know when does shifting of dsg7 gear happen, if i am accelerating very slowly on the peddales?
now it usally shifts to 2nd on about 15km/h with an rpm about 1700
3rd about 25km/h at same rpm
4th on 38 at same rpm
5th at 45 same rpm
6th at 52km/h same rpm
7th at about 60 km/h of the same rpm 1700

is that logic and correct? shouldn't be shifting more delayed?
if that is correct does this mean the 7th gear will take the car all the way up to 260km/h alone?
please advise me as the car is still under warranty
N.B i don't want to trouble the service guys much(if this is normal) so i can save them until i really need help (so they don't get board from me)