Erich, the understanding I have (never having the opportunity of flying either aircraft) is that in the fly-off competition, between the two aircraft, the uhu came out on top. Also, according to the performance data (from a couple of sites on the web), I see that the uhu was faster with a slightly better ceiling.
Performance: Junkers Ju 88C-6
Maximum Speed: 300 mph (480km/h)
Service Ceiling: 32,480 ft. (9,900m)
Performance: Junkers Ju 88G-7b Nightfighter
Maximum Speed:
- 270 mph (435 km/h) at sea level
- 363 mph (584 km/h) at 33,465 ft. (10,200m)
- 389 mph (626 km/h) at 33,465 ft. (10,200m) with MW 50
- 402 mph (647 km/h) at 29,855 ft. (9,100m) without flame dampers
Time to 32,315 ft. (9,850m): 26.4 minutes
Performance: He 219A-7
Maximum speed: 416 mph (670km/h)
Service ceiling: 41,660 ft (12,700m)
Range: 1,243 miles (2,000km)
Performance: He 219A-7
Maximum speed: 616 km/h (knots, 385 mph)
Range: 1,540 km (nm, 960 mi)
Service ceiling: 9,300 m (30,500 ft)
Now I understand that a roomier nose section with room for four crew members and a larger "dish" antenna can definitely be considered a benefit, but it comes with its penalties of increased weight and drag. In addition, as per my information, the German "dish" radar (code named Berlin, I believe) was not ready at the time frame in consideration.
I was aware, from my own reading, that only a part of NJG 1 used the uhu operationally. I therefore find your claim, that other Nachtjagd units "rejected" the uhu interesting. I can think of many other reasons why a newer and controversial aircraft can have a long and slow gestation period; Production may be slow and there may not be enough aircraft to go around, the initial aircraft may have "teething" troubles, and may have many new and unproven features, and a controversy may give it a "bad name", just to name a few.
If you have sources that show, that the crews of the other Nachtjagd units rejected the uhu on the basis of its (inferior) performance, I'd certainly like to be enlightned.