Probably more intense slabbing/destruction of more well built homes. Those were in much more populated suburban areas and were much larger, so they hit a much larger swath of structures, as well as moving slower, allowing for a longer time to damage structures. Meanwhile in Greenfield, the tornado was narrow and fast-moving, leading to much less time to damage structures, as well as Greenfield being a much more rural area and potentially not having any buildings capable of withstanding EF5 damage/windspeeds.It makes me curious what did the tornadoes in say Moore and Joplin do that this one didn't?