Since someone brought this, I want to say there is a reason Kishi used this. First, this is a graphical novel. Second, the graphical language is different from all-written language. So, if I consider graphical language, there are many meaning to the page given by Kishi. Let me give two of them:
1. The moon/Sun of Naruto and the moon of Sasuke do not match perfectly their clan crest
This is obvious:
Uchiha crest = crescent moon + either , or crescent moon +a byakugan. (Kakashi may be right here)
Uzumaki crest = Ahsura's moon/Sun + a Spiral.
Thus, this image simply says that both Naruto and Sasuke are more than the people they reincarnate. They also have their own ideal on top of those they reincarnate. They also have power that does not belong to either Ashura or Indra.
2. Uchiha in search or harmony and Uzumaki the savior
As it can be seen on the image, Ashura adding either byakugan or the fan, which may symbolize another clan seems to be trying to connect to the light. Notice that the Uchiha crescent moon is associated with darkness and hatred. Thus, they may have been trying to escape their fate, which led to associating with someone else. However, it appears that the two symbols are not connected, indicating a failure.
On the other end, the Uzumaki Symbol shows complete connection. Besides, if the background represented by Naruto's black and orange suit is added, it appears that not only the Spiral and moon/sun connected very well, but they also connect the black (darkness) and the orange(light). Thus, this matches perfectly Naruto's role of savior as someone who can achieve perfect harmony.
This also matches what Hagoromo said about foreseeing that someone with his power would appears, and also matches what Madara said about finding happiness.