JU 52

[Hazard69]

Some guns are better than no guns, all else being equal, but between the Ju52 and C-47 not all else is equal.  The C-47 is much faster.  That is why it would be a choice.

True, but I'm pretty sure theres enough die-hard german iron aficionados who'd still take it up regardless.  
A few .30s aren't going to save anyone being chased by a fighter, but then again neither would being 60mph faster.  
EDIT: Matter of fact I think a more common defensive technique would be to use the slower speed to try and get the con to auger.  

[Karnak]

True, but I'm pretty sure theres enough die-hard german iron aficionados who'd still take it up regardless.  
A few .30s aren't going to save anyone being chased by a fighter, but then again neither would being 60mph faster.  
EDIT: Matter of fact I think a more common defensive technique would be to use the slower speed to try and get the con to auger.  

60mph faster buys you time and perhaps a friendly will be able to intervene.

Both are sitting ducks.

As to the German fans, as I said, it is a choice and thus would be a nice addition.  When people ask for armed, 280mph Italian bombers that were also troop transports, well, that isn't a choice, it is just flat out better in all ways.