The inconsistency of the Davis accounts merely means that you cannot rely on their accuracy.
Yes, eyewitness testimony is notoriously unreliable yet it's still a staple in every courtroom, you being Oswald's defence attorney will attempt to rely on this absurd generalization as above to completely discredit the two girls but that's not how it works, that's never been how it works.
Every facet of their accounts and all the eyewitness accounts would be examined and the jury would create their own narrative from ALL the evidence.
The following map is a result of this co-ordinated corroborated narrative and minor tiny discrepancies that you find oh so important, pale into insignificance when the entire event is examined. Like who cares the order of when the phone call was made or any of the pissweak things that have no bearing on the overall picture.
JohnM