Not totally accurate but point taken.
Trisquel being based on Ubuntu does pull from Ubuntu LTS which is mainly
Debian Testing, not Stable. Therefore, Trisquel's packages are more recent.
This is one reason why many people recommend Trisquel or Ubuntu for those who
want more recent programs. gNewsense is Debian Stable, so it will always lag
behind by design, exactly like Debian Stable, however, is more stable by
design as is Debian Stable. Ubuntu LTS still pulls from Testing regardless
of the length of support. As opposed to reg. Ubuntu which is mainly Debian
Unstable. All comes down to what a person wants or needs. Debian Stable or
gNewsense=slightly older but rock solid will not break, Ubuntu which is
Debian Unstable and prone to frequent breaks during upgrades or somewhere in
between which is Ubuntu LTS or Debian Testing or Trisquel, not as risky as
Unstable but not as rock solid as Stable, you do, however, get more up to
date programs.
There is a good discussion on the askubuntu thread, dealing with servers but
still applicable to the general differences:
http://askubuntu.com/questions/15314/debian-stable-vs-ubuntu-lts-for-server