We know little of this case so it is somewhat presumptive to say the only evidence for the prosecution was the word of the victim.  This was a three day trial so what else was presented to the court?  With a victim as young as this reporting of trial details is very limited.

We don't know whether she was in care or lived at home with her family - how the accused knew her or got to know her - what circumstantial evidence surrounding the times when the offences took place exists nor even what the offence actually was.  Was there a legitimate reason for this man to be in contact with the girl?

Was there medical evidence of abuse, what did the picture referenced in the link actually depict?  The questions go on and were no doubt addressed in court - details which don't appear to have been reported as they could identify the victim.

We know so little about the case that to use it as an example to support your stance or mine is not possible.