ScyllaDB says it's 26x Cloud Bigtable

We were burned back in the day very heavily by mongodb marketing, now while mongo has changed dramatically since then and certainly a viable option now for many use cases, I am from that experience very wary of databases that restrict comments and open discussion on their marketing materials. ScyllaDB has YouTube comments turned off and no commenting on their blogs. Hard not to be suspicious of that. Considering putting JaniceGraph on top of Cassandra, Scylla or bigtable, anyone having an experience here or recommendations? Thx.