Why do you think so? The Wikipedia page on their method of hierarchical temporal memory[1] says that:
The goal of current HTMs is to capture as much of the functions of neurons and the network (as they are currently understood) within the capability of typical computers and in areas that can be made readily useful such as image processing. For example, feedback from higher levels and motor control are not attempted because it is not yet understood how to incorporate them and binary instead of variable synapses are used because they were determined to be sufficient in the current HTM capabilities.
It doesn't seem like they are even close to a simulation that could accurately model something like C. elegans.
