you're right, my brain is borked at the moment

As for jitter, a nice explanation can be found here:

Jitter expresses how much the structures recorded to a disc deviate from the length they are supposed to have. Jitter should be as low as possible...

In other words, it examines how evenly sized the pits and lands are. The more the deviation, the higher the jitter percentage

Preliminary scans show that Lite-On reports higher jitter than BenQ.