Comparing Cassandra To Scylla - what can I do to show scylla in its best possible light?

A question - @GuyCarmin We have systems in production which are 27-36 nodes for example (m6g.4xlarge). What sort of size cut should I be able to expect from a Scylla DB system (very roughly)? We tend to currently get limited by the CPU rather than I/O. For Scylla, is it that much more CPU efficient that it is way more likely to be limited by I/O instead of CPU thus the recommendation for instances that use SSDs?