From http://www.airforce-technology.com/projects/fa18/specs.html the F/A-18 E/F has a combat radius of ~400 n miles. A F/A-18 C/D has a combat radius of ~290 n miles http://www.globalsecurity.org/military/systems/aircraft/f-18-specs.htmWorld class LO capabilities could be refering to the APG 79's EA capability, but i reckon its mere puff.
And as far as the block 2 having a similar range to the F111 i have to disagree with that one. Clean its combat radius is something like 150~170NM. Thats pretty pathetic. I think he's refering to the ammount of external fuel it can carry. With several external tanks it may be able to reach out to somewere near the range of a clean F111, but then it compromises its payload. I doubt it can compare to the F111 in terms of payload to target capability. The pig is a dedicated bomb truck after all. But then again the pig cant use all that range if there is fighter resistance. It could however take a JASSM a long way before launching it. But given the Block 2's avionics package, electronic attack capability, payload, networking and weapons loadout it should give the RAAF a significantly increased strike and air superiority capability.
The listed ferry range is about right for comparison to an F-111 but that would preclude carrying ordnance. Having said that though, it is possible that with development and deployment of things like the JASSM and JSOW (and -ER versions) that approximately the same range could be reached. Granted, the total weight of ordance is still not likely to be reached in terms of delivery I don't think that is as important. IIRC one of the things that has been learned as a result of GWI, Kosovo, Afghanistan and GWII is that precise delivery of small PGMs have greater desired impact than larger munitions. As such no longer using 2,000 lb bombs (LGB or not) is not such a great loss in capability, nevermind factoring in the reduced requirement for escorts and AAR.
Some of the rest of the article I do question though, namely the LO/stealth. The aircraft is physically larger than a classic Bug, but through some LO adaptations is supposed to have a smaller RCS relative to it's size than other aircraft like the F-14, F-15, F-16, etc. I wouldn't call that stealthy, but RCS reduction measures sounds about right. Then again, it's a mass media outlet catering to ordinary readers and such a distinction would likely be lost on most of them.