Thanks for all the help!
I think I figured out what the second set of data is- while the first is an offset, the first and second bytes in the second set act as a bookmark of sort, showing where the move data begins, and the third and fourth bytes (aka 00 00) show where the attack data ends!
And, to my surprise, it appears that monster.bat (which I'm hopeful contains the data on the pokemon) is organized in the exact same fashion! I'm not entirely sure what each byte corresponds to, but I think the second last one might be the move's power (when you divide them by 16, you get some numbers suspiciously similar to the "Star" rankings for each move). Monster, on the other hand... I'm going through a list of PMD stats, to see if any of them match up. If I do find a match, well, that's good news!