Why back to *.tgz?

[Kyryll A Mirnenko]

  Plz, save our time & money! gzip looses ~20% of bzip2 compression. If 
someone has problems `pkg_add`ing *.tbz packages on STABLE (I'm on 4.9, no 
such problem exists for me), he always can `bzip2 -d it.tgz; gzip -9 it.tar; 
pkg_add it.tar.gz`. I think FreeBSD users're not so dummied not to deal with 
it.