I disgree. DS9 has aged substantially better then TNG despite the fact that at the end, both series were overlapping each other. And DS9 IMO has aged better than the lousy CGI during the first couple of years of B5. One thing I do agree with though is because the whole story for B5 was thought out in advance the overall continuity of the story is better than DS9. However, once the producers decided to make the Dominion war arc the center piece of the the reminder of the 7 years it got better.