They say that new parents take tons of photos of their firstborn.
Any subsequent children that come along will find the photo albums hold fewer and fewer photos of them. And a great number of their photos are actually group shots.
There is no diabolical plan to slight children, its just one of those things that happen. Each are equally loved and adored. Just be glad we still took some photos.
And to us, you're both still the cutest boys around!