The F-15Es load out is the same.
The F-16XL carries more fuel internally than the F-15E does. It also has only one engine which allows greater range.
The payload on the F-16XL was much better even though it carried less. The subsonic performance on the XL was superior to the F-16Block 30 and way superior to the F-15. With drop tanks, even F-15s payload capacity falls to similar levels. Even with 3 drop tanks the XL had more usable hardpoints.
As the XL would have developed further the center line hard point could even have carried the 5000 pounder. The current F-15C cannot carry the GBU-28, only E can. It's centerline was strengthened during the final development phase.
Both aircraft conformed with requirements, USAF went for the more expensive F-15 to keep it's production going.
Nobody can opt for the XL for the same reason as why nobody can opt for YF-32 or YF-23. Their time is passe. Had the XL won, there would be F-16Es and Fs in the world market instead of the Strike Eagle.
Anyway we can agree to disagree and leave it at that.