How does the Federation (using the end of ST:TNG as a basis) fare against the races of Babylon 5?
It's armada vs armada in an empty solar system composed entirely of lifeless planets. Assuming each race brings to bear the full might of each of their corresponding fleets in a battle to the last ship/man.
Let's assume each fleet is led by the best commander available to their corresponding civilization during the given time perioid (you decide who).
Federation fleet vs:
1) Humans (does not include Excalibur)
3) Humans + Rangers (including Excalibur)
5) Interstellar Alliance (includes Rangers and Minbari)
How far does the Federation get?
As a bonus, here's a little video I found in youtube on what a battle may look like (tho I disagree with the video, it's still a pretty well made one):