EPAWSS has not yet flown.

Sorry, my bad. I meant “fully updated”.

Nobody is going to sink the hundreds of millions into an “ADVENT” engine for the F-15E unless it has firm orders for it.

The ADVENT version of the F-135 is already in the works because they know there will be thousands of customers.

There is not enough of a customer base for PW/GE to pay for ADVENT development.

ADVENT for F-35 will come long before anything else (as an upgrade) so the gap between F-15 and F-35’s range will get even smaller.

To think the F-35 can overlap the F-15E is bogus.

The specific scenario was to possibly buy F-15Es because the F-15C were not getting their EW upgrades. In that scenario the F-15C is playing the part of Air Superiority which the F-35 is clearly dominant in. If the requirement was max range or max load then the conversion would be different.

Time on station and range are all tied to fuel. They are all just different ways to describe using the same feature. However, we are specifically talking about the F-15C and not the F-15E, so it does not have “that” much fuel. In a clean A2A config (no EFTs), the F-35 actually has a longer combat radius than the F-15C but loses to the F-15C when it carries EFTs (by ~300nm).

Speed is a non-issue since no F-15 has gone above Mach 1.4 in combat.

As far as the EW, no, it does not stack up against the F-35’s, especially in the area of jamming or situational awareness.

On the radar, while it may have a larger array, it is not as advanced as the F-35 (it’s not new, but a combo of the old back-end with APG-79 front-end) or “sensor fused” the the extent that the F-35 is. It also makes no claim of LPI or jamming.

Furthermore imagine if Iraq was just fighting KSA + kuwait + UAE airforces alone in 1990 and not the entire might of NATO.

Then the F-117s would have spent the 1st week taking them all out on the ground then the rest would have continued just as it did.