Confusing low speeds

[#1]

Just did the BT test and it says that my download speed is only 1511kbps but the IP profile says i should be getting at least 3195kbps, i've done the test several times of the last month or so an the highest its been has been about 2000kbps, is there anything you can suggest?
The attachment is a screenshot of the test.

[#2]

What does this say https://portal.plus.net/my.html?action=data_transfer_speed
What is the status of your exchange http://usertools.plus.net/exchanges/

[#3]

Hi RogerDom,
Welcome to the forums,
I've updated your profile to 3300 to allow for your BT IP profile. this should take effect shortly.
Jojo