Notice how easy it was to get a picture of him smiling, since he could play and explore so peacefully?
Notice how each picture is slightly blurred, due to the constant flurry of activity?
Obviously, Tyler is having a very different experience with that same toy. Somehow I imagine that will be true for the rest of his life: everything he learns will be under the influence of his older brother.
He may not always appreciate the added entertainment, but I doubt there will be much he can do to change it.
Tucker just loves his brother so much... perhaps a little too much?