In its fourth Measuring Broadband Australia report, the Australian Competition and Consumer Commission said when under-performing services were removed, the results were comparable for all three technologies, at about 88%.
The competition watchdog said on Wednesday this indicated that many more FttN customers could expect to see similar speeds on their existing plans as those on FttP and HFC.
Download speeds during busy hours.
The ACCC tested 25, 50 and 100Mbps plans, and ADSL services over 30 days in November last year for this report. More than 980 NBN and ADSL services supplied by 15 retail service providers were tested, using 220,000 download speed tests.
The report said download speeds at the busiest hour — when RSP networks were under the most stress during the testing period — were much lower than at other times during the busy period. Different RSPs returned results varying from 71.8% of the plan maximum to as low as 48.3%.
Download speeds during the busiest hour.
The ACCC said it believed the drop in speeds could be due to retailers migrating customers to new wholesale NBN products launched in October.
“It is good to see that providers have generally managed the transition to NBN Co’s new wholesale products without too much impact on customers,” said Sims.
"We will await the next round of speed testing results with interest, to see if providers have improved their performance.”
Upload speeds during busy hours.
The ACCC found that under-performing services — about 13% of all tested connections and mostly FttN services — had a significant impact on the overall download speed results.
These services never came close to the maximum speed promised, because of either limitations with some FttN lines, or connection issues such as in-house wiring faults.
Charts: courtesy ACCC