^ He said everything. The 2DS, the 3DS and the 3DS XL have the same CPU. Only the N3DS(XL) will get faster downloads because it has a new hardware, and I guess that she has a new wireless card that is better than the ones embarked in the regular 3DS models/2DS.
It has nothing to do with the CPU, however, since the CPU just controls the card, and it doesn't have an impact on download speed.