The dire figures got me thinking. Why do the telecomms companies limit the upload speeds to, typicaly, 1/8th of the download speed?
The clue is in the name my dear....
ADSL =
Asymmetric Digital Subscriber Line
You get what you pay for in this world, and that particular technology implementation makes it cheap for telcos to roll-out because of multiplexing magic at the exchange.
The precise figures you get depend on contention ratios and packet shaping going on at the ISP.
How else do you think they can afford to give you "superfast broadband" for a paltry single digit sum per month.