Proof that Telstra Bigpond is Throttling Youtube Bandwidth in Australia?

Are Telstra (Bigpond), Australia’s largest Internet Service Provider deliberately throttling (capping) Youtube bandwidth on all of their plans?

Try it yourself:
https://www.youtube.com/my_speed

My speed:
http://www.eevblog.com/images/telstra/MyTelstra.png
Other Telstra customers:
http://www.eevblog.com/images/telstra/Telstra1.png
http://www.eevblog.com/images/telstra/Telstra2.png
http://www.eevblog.com/images/telstra/Telstra3.png
http://www.eevblog.com/images/telstra/Telstra4.png

Other ISP’s:
Internode: http://www.eevblog.com/images/telstra/Internode.png
Netspace: http://www.eevblog.com/images/telstra/Netspace.png
Optus: http://www.eevblog.com/images/telstra/Optus.png
TPG: http://www.eevblog.com/images/telstra/TPG.png
Exetel: http://www.eevblog.com/images/telstra/exetel.png
iiNet: http://www.eevblog.com/images/telstra/iinet.png

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