Curzondax:
If by standard equipment you mean the majority of the German fighters fitted with gun camera then the answer is yes.
To have gun cameras installed in fighters was a standard procedure for the Luftwaffe from the offset (Poland, September 1st. 1939).
Installing gun cameras in both Bf 109s and Fw 190s became even more significant during the bloody year of 1944, when the Luftwaffe wanted to gather as much video as possible of attacks against the massive heavy bomber boxes for both training purposes and propaganda.
I´ve been trying to figure out of a more exact percentage of German planes fitted with cameras during 1944; although I am not yet done, it´d appear it is not possible to finally come along with an accurate figure.
Still, and from what I´ve read and asked, it´d appear that at least 60% of the German planes were fitted with those cameras.
The situation of the USAAF in this particular department ain´t necessarily clearer. I have asked USAAF veterans of an approximate number of fighters fitted with cameras, their answers were not very helpful, but they told me many of the american planes in fact had no gun cameras.
Any further information from members would be nice.
Ah: best pilot? Several hundreds of German experten.
You can rule out the bulk of soviet pilots, they relied heavily on partisans to have their claims confirmed. Also, they were subjected to tremendous pressure by those political felons attached to all armed branches of the Soviet Union, who would greet pilots returning from combat missions with questions such as "How many fascist snakes did you shoot down?".
If "none" would become the standard response to such questionings, the pilot could certainly fret about his future.