Will 3DS have more 5 Million Sellers Than DS? (3DS~4 vs DS~18)

[NintendoPie]

tbone51 said:

there are 4 now! Luigi's Mansion 2 should be another along with Pokemon X/Y, Pokemon Z, Pokemon Ruby Sapphire Remakes. Thats 4 more and if another pokemon gen comes to 3DS then thats another two 5million sellers right there :)

What do you mean by "there are 4 now"? Do you mean there are 4 sequels to games already on the 3DS?