I think that Captain America's team has a slight edge in this fight, because of:
1) Super Soldier Serum gives Captain America increased endurance over either Batman or Night Wing.
2) Night Thrasher has added protection from blunt ojects, he also has a slight weight advantage over Night Wing.
Geez, this is really too close to call and could really go either way. I'd give the SLIGHT advantage to Batman and Nightwing because of their teamwork skills. I haven't seen Night Thrasher and Captain America work together so that might hurt them a little bit. So, in my opinion, Batman and Nightwing take this via their teamwork skills.
__________________ Poppa's comin home to sling some dick.
This is the first time I launched a poll, I don't know whether or not it works properly. Sorry in advance... I knew I should have taken more time to test it out. Sorry again.
Night Thrasher was beating the hell out of Punisher the first time they fought. The Punisher had to resort to the use of an Uzi to get him off of him... so he's no slouch.