There are a number of factors that can influence the performance and results of a software probe within the same ASN, within the context of an ASN that is a last mile network operator... I would say that the community is somewhat reliant upon people self-reporting the general street address and physical location of the probe correctly.
Within the same ASN in a regional last mile broadband network there might be probes on DOCSIS3 last mile technology, GPON, active ethernet, in datacenter space/colocation, etc. My probe which is singlehomed to a spacex starlink v1 beta terminal for a while was in the same Google ASN as a bunch of terrestrial 10/100GbE fiber stuff but its results were obviously quite different.