8 Bit Comparer

This is a 8-bit Comparer I made. It compares 2 8bit inputs, and tells you which one of the 2 is bigger. Its also pretty easy to add onto it, so it detects if 2 are the same signal as well. Expanding on the 8 bit is pretty difficult with this design. (if you have any ideas, tell me please).
In the schem, there are 2 versions. The first version does everything I've described, while the second version only returns the output which is bigger. However, the structure is also quite a bit bigger.

Heres a video showcasing it, and explaining it:
www.youtube.com/watch?v=rcMt8bNIYTE