Today marks exactly one year (happily?), so I'm commemorating it (lol).
The difference is obvious when you compare them.
When I started, I thought I could just quickly mix parts together (lol).
I was being naive...
I started noticing how different they were, so I kept refining the shape, then I started noticing things I thought I was finished and had to redo it, and then halfway through I wanted to display multiple units, so I changed my approach to duplicating the main parts, and so on...

Congratulations (?) on the one-year anniversary of the start of production of the Gouf Custom (Requiem for Revenge version) | しゅん's Gunpla works