You're right, the spot that verify fails on is different.
Continuing to think about the image, I mounted it as a virtual drive, "ripped" it again, then burned. Burned great on the first try on the ASUS. 95 score on discspeed. This is after 5 failed verify coasters from the original image.
In fact, I tried burning this exact image on the first page of this thread, and it also failed. I forgot about that.
I've had this happen before with IMGBurn. Verify consistently fails until the image is mounted in a virtual drive then ripped again.
I'm forgetting the Matsushita drive completely for now, because it refuses to burn these DVD+R DLs. It's 6 years old, so its burning capacity must be on the way out.
I've burned a few other DL images without issues. I'm not sure why this happens, because as you say data is data. Is there any further information I can provide?