I couldn't help but notice that they don't look quite right. It it is either a strong hazy effect or a lower resolution. All i can say it 1-4 looks of a higher resolution in the more remastered scenes than 5-7 and 8+9 look significantly sharper and cleaner. I checked the Japanese 5-7 blu-ray and it seems to be the exact same thing.
I didn't notice this before as had I poor vision, but no glasses at the time.