Yes, in both cases baby mice were made. And yes, eggs and sperm are haploid. But the difference here is that the starting cells were embryonic stem cells -- tha

Yes, in both cases baby mice were made. And yes, eggs and sperm are haploid. But the difference here is that the starting cells were embryonic stem cells -- that is, they are cells that are "pluripotent" -- that is cells that haven't yet been programmed to be any particular cell type. So it is a more difficult accomplishment than just working with two eggs.