The differences in Garp's listed ingredients, when compared to the one I made, are salt, Sugar, Garlic and Turmeric. The substitution of cream and milk for evaporated milk is also noted. These may well be the difference between an edible and an enjoyable dish.
Whether or not a Korma is a "real man's" dish or a "real curry" is a ridiculous notion. If you are a chilli head, good on you, but just because a curry doesn't burn your face off doesn't make it any less a curry and the ability to tolerate capsaicin is not determined by gender. Have a good look around at some Korma recipes out there, as I have done. There are some that are not at all "mild" and it isn't unknown to see up to 10 or 12 green chilli added along with pepper. This may not be the same as munching on Naga, Reaper, Ghost et al, but it will certainly be too spicy for many peoples' tastes.
I have a small container of now discontinued "Clive of India" Korma Curry Powder. I can assure you that while it may not be a "hot" powder, it is most certainly not a mild curry powder either.