Terrain has a lot to do with what assets are employed.

Examples around me are the Waldo Canyon fire. Very rough terrain and limited use of the big aircraft, while the Black Forest fire with relatively flat terrain got knocked down with a lot of large aircraft (Dc-10, C-130's) and rotary aircraft with the "bambi buckets".

Video showing the c-130s equipped with the MAFFS.

MAFFS Archives - Fire Aviation