Thanks, I looked at the line health graphs and the bit loading graphs.
So as expected your older VDSL line has better bitloading not just on the upstream but also the downstream, so it is a better line, so then I looked at the line health graphs to try and find out why.
The new line seems to have less noise on it, but it is also higher attenuation. On the telnet it seems very similar 27.2 vs 27.0 but if you look at the hlog its more significant around the end of D0 and start of U1.
If you are using dslstats, you can click on telnet -> pbParams and it will provide more detailed attenuation thats measured at U0 U1 etc. There is also an attenuation log there as well which is useful for tracking it over time.
It could be I am wrong of course and even though it looks bigger on hlog it still might not be expected behaviour.
I did also check the dslam firmware version and your 2nd line is on a different one, which backs up what john was saying so it might be as simple as having it moved.