Airsoft comment in a real firearm thread... The title is guns, not toys... I'm going to crab popcorn.
Your really compare ww2 weapons to modern ones? It's like to compare an 1935 Adler Trumpf to a Mercedes E-Klasse.
Off course the Mercedes will win in every category, because it's a modern car.
It's the historic value, nostalgia and style that makes this weapons so great. Almost any modern firearm was influenced by german WW2 guns.
The MP40 is the archetype of the modern submachinegun. The PPSh, Thompson and the Bren where still quite different concepts and partly obsolete. Those are the weapons that has to be compared to it, not the 2001 MP7.
The M60 is based on the MG42 ( a bad copy, if I may add *cough* jesus bolt *cough*) and the stg44 influenced heavily the Kalashnikov and the M16.
But the stg44 is by far the most beautiful gun of these three.
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Also MP5 and 7s are as german as a Volkswagen or the deutsche Bank. H&K is a global company. They produce everywhere.
In fact, the companies stocks are mainly owned by private investment groups aka arab sheiks and china.
The "made in germany" is just a marketing trick.