On a different tack does anyone have any ideas how the US Navy will use the aircraft WRT to the F-18E? I'm sure not too many will disagree in calling both aircraft jack of all trades in terms of performance - but one is stealthy and the other isn't.
USN sees F-35 as a compliment to F-18E/F as well as a force multiplier. Besides stealth, the F-35 has a sensor suite the F-18 lacks. But with datalinking, the F-18's will have all the sensor data that the F-35's have. The only role the F-35 will be assigned to and not the F/A-18 is the "first day of war" penetration mission to a heavily air defended target area. But even that may change if air defense systems adapt and are able to counter stealth and USN relies more on jamming using Growlers than on stealth. Or maybe using Gowlers as stand off jammers (as opposed to escort jammers) to support F-35s who would still fly the first day penetration missions. Unlike USAF, USN has not put all their eggs in the stealth basket. Seeing as the F-35C is still a ways off from IOC and way way off from FOC, things are in a state of flux in USN. Tactical doctrine will be fleshed out once enough F-35s get into the fleet and they figure out its full capabilities and how to best use F/A-18 and F-35 together.
I can't imagine you would have F-35 doing Air Defence and the Typhoon A-G?
A LOT of money is being spent to give Typhoon a very good A2G capability. It would be a huge waste to not to use it when needed. And the F-35 has a pretty potent A2A capability. It would be a huge waste not to use it when needed.