Ok, so the side-by-side show there is indeed a significant improvement here. Obviously it isn't Kevin Ferrer-quality, but we knew that was never going to happen.
Something that I found really helped the overall appearance of my MMS202 was putting it inside an Apextime Chaos Infinite display case. The uniform cool white lighting, being able to control the light distribution, and the mirrors reducing the impact of outside lighting sources really seemed to improved the look of the figure. Did it magically transform it into an accurate appearance? Obviously not, but it did give the silver a more muted, steelier appearance.
After I got the superior Enterbay figure, I had it displayed beside the MMS202, and it made the MMS202 look terrible (the EB paintjob is also no Kevin Ferrer custom, but the base colour is significantly better than the HT). I was tempted to put the MMS202 away entirely, until I moved it into the Chaos case, which just made it look so much better. The only downside is that it made the slight purple on the MMS202 even harder to see than it already was.
Obviously "Buy a $150 USD display case" isn't going to be a great solution for everyone, but if you're a big Robo fan it's an option.
I'm definitely going to be displaying this new one in a Chaos case as well, so I'm hoping I see similar improvements.