I am sync at 79999k and BT and PN IP Profile are 77.35Mb and I getting 75Mbps throughput. Well, bit closer to 76.
http://postimg.org/image/eggynztt5/
And that speed tester is accurate? My finding are that is always gives a higher result than actual throughput on the DS and lower upstream,
I have had results in excess of the IP profile of 77.35 before now,