Is it logic to combine 3DS and N3DS sales ?

[nanzano]

ktay95 said:

nanzano said:

Dr.Henry_Killinger said:
Its still the same handheld, its like PSP Go vs PSP

But the PSP Go didn't have exclusives, right ? and the HW wasn't improved.

DSi had exclusives, GBC had exclusives and they are combined with their respective original versions. So yeah, we add the sales together.

If it is the case how and when do we decide to separate sales? Because HW improvement and exclusives are the main reasons imo, that is why I ask if it is logic to combine