I'd say it's an AIS question and I'm not a grad-jit... or maybe the reps at Jeppesen (since your airframe uses SDPs also) have an easy way to explain the difference between the advisory circular/FARs and how at least AMC handles climbouts and gradients both all engine and OEI. If your home 'drome has TERPs folks they might also answer that one for you.

When the approach plate or DP says "USAF" on the top and not FAA or USA (Army) I don't know that the "TERPS" done by the USAF is similar enough to the FAA TERPS that this is an apples to apples issue in any way.