I'm not so sure. The biggest explosion I saw in the video was right at the base. I think that the liquid methane spilled and fell to the ground. Probably the oxygen tank also burst by that time, spilling LOX right into the path of the falling liquid methane - creating a nice mixture of methane and oxygen right at the base, ready to explode.
Still, there was probably more energy stored in the Starship propelants than in the Falcon 9 case.