Come on, Germany lacks in air defense because of Eurofighter delays and cutbacks. Those MiGs you love so much have been retired, and they didn't fly that many anyway. No the majority of the air defense is composed of F-4F Phantoms, and although their AIM-120 AMRAAM capability makes them a good interceptor, they are truly not a good match. The Tornados are not really for air defense, but if they would have to face an attack, the best they can do are the AIM-9Ls. Eurofighter is slowly entering service, so it might be a pretty good service, but compared to the US, UK, Russia and Israel, I wouldn't choose them. The UK has more Eurofighters on order, E-3 AWACS aircraft, the F.3 is upgraded with AMRAAM and ASRAAM. And the Tornado GR.4 carries ASRAAM as well. And don't forget the stationed US F-15s in the country. Also it has the north sea as buffer.
German defenses have been crippled by budget cuts since the cold war, and in the cold war, Germany was really just a buffer for the west, filled with offensive aircraft from UK and US to attack incoming tank formation, it would be the frontline. Main problem is the lack of AWACS.
I've seen some nice charts of the Russian air defenses around Moscow, pretty amazing.
Italian F-16s, what do you expect, it is the first time in many years they have been operating such an agile aircraft. They have operating it for what, 2 years now?
If we go back to WWII, you might want to prefer UK air defense, which manage to hold off the attackers. German air defense although pretty good equipped with radar, nightfighters, strong day fighters and not to forget the 88mm and FLAK weapons, the allied bombers managed to bomb all major German city including Berlin in the east of the country. The damage they did to Russia/Europe has nothing to do with air defense, but with offensive blitz actions (the Luftwaffe was never that successfull and losses were high).
Israel is pretty good, but they needed PATRIOTs on several occasions from allies to protect against SCUDs. The Arrow should be filling that gap now.