The Oberst might be considered notorious rather than reputable...
... but neverthless I'll hazard a guess:
As the ELR for the US is 2 in this scenario, I believe that the HS being a 337 rather than a 347 is intentional.
The 337 has an underlined Morale Factor, i.e. an ELR of 5 rather than 2 that a 347 would have had without its morale being underlined.
Maybe, the scenario designer wanted to include some 'hard-ass' team for what we might call 'special operations' which is supposed to be somewhat more resilient to ELR than the bulk/rest of the troops.
So I'd play it as printed.
von Marwitz