More questions

this is going somewhere; I want to make a comprehensive table of pros
and cons...
About the AAA: didn't the Americans rely more on HMGs than cannon?
Your answers are very much appreciated. I know very little about fleet boats.
Am I right in thinking that the German optics where better?
I know the Germans where leading the world in optics before the war.
Did the Americans have a targeting system for surface attacks?
Where the American attack scopes powered? Where they self-stabilising
in rough seas like the German scopes?
Is it fair to say that the German fleet was more versatile?
Did the Americans use any of the following:
Milkcows, U-flak, coastal boats, mine layers, mini-subs, manned torpedoes and/or cargo adapted boats
Am I right in thinking that the American boats could use hydrophones
on the surface? Did this work well?
Did Americans develop pattern running torps? Wake-less torps?
How good where American acoustic torps?
Might the advantage of having 4 diesel engines in the American boats
be reduced a little because they didn't drive the prop shaft; they just
powered the (two?) electric motors?
Could the American boats rig a sail in case of engine failure?
Am I right in thinking that the Americans had taller conning towers?
Did the Americans have decoys like bold?
How about anti-sonar paint?
ed: Did the Americans have huffduff on the subs?
What about radar detectors like Metox?
Thanks