That would be very surprising to me, NMC is used for the greater cycle life, PowerPacks are destined for high-cycle applications.
Also note that one powerpack has 16 modules and is 100kwh, 100/16 is approximately 6.4, the capacity of a power wall. I'm quite certain that a powerwall is just a single module from a powerpack.
It's rare I can contribute to this thread as my financial acumen is eclipsed by the regulars, but I'm a battery pack engineer (for a serious but non-full-time job) and feel quite confident about the above statements.