Lens comparison: Samyang 12mm f2 vs Fujinon 10-24 f4

I noticed some haziness in pics taken with my Samyang 12mm, the lens I’ve been using for all my real estate shoots. We’ve had a lot of business lately, so I used some of the extra money to get a Fujinon 10-24 f4 lens. I’ve been thinking it really is a better lens, and not just a Gear Acquisition Syndrome purchase. Now I have proof, sort of. The Samyang at f8 is brighter than the Fuji at f8, so I need to make another test and adjust the aperture until the images are equally bright.

These two are both post processed. I tried to get them close to the same look. Left is Samyang, right is Fujinon.

These two are the bright images in two 3 bracket sets. Left is Samyang, right is Fujinon.