If you're talking more about the implied setting and "feel" than the mechanics, then I submit 4E still could not have existed in its present form in 1974. Why? Because OD&D was informed by fantasy popular at the time of its creation. The same can be said of 4E. But much of the fantasy informing 4E did not exist in 1974. So my point remains.
Lets not talk about the type of fantasy but the impact of fantasy. The measure fantasy can connect and grow into you.