You mean the second set is using the specific IB frame to match, while the first did several matches based on a single frame comparison, right?
The second set looks more natural. The darker regions don't have the weird green blobs going on. The sky is quite white, and it looks a bit strange against the very light desert landscape. But would you say that's how the reference prints looked? Do you think the luminescence is correct? Is the bluer sky in the frame 1 of the first set due to the reference frame used (i.e., leftover blue from the BR)?
Here is a set of comparisons from the two sets: