On top of the other responses, I don't think the two sources use comparable data to begin with. The first source says that there were ~2m acres burned in both o

On top of the other responses, I don't think the two sources use comparable data to begin with. The first source says that there were ~2m acres burned in both of 1991 and 1992, whereas the latter peaks at 100 k/ha, which converts to about 240k acres, nowhere near 2m.