Erm, isn't one of the foundations of a military service to be able to handle the next fight no matter who it might be?
Hmm, well I suppose so. I take it from your comment that you imagine that the FAA or RAF would somehow be incapable of handling any fight, equipped with an F-35 armed only with a mere pair of air dominance weapons then? I'd advise you to refer to the lessons of history
Seriously though, you're illustrating precisely the attitude that I was referring to in my last post - this fatally flawed American-inspired notion that in order to prevail, there must be a constant battle to create yet another over-priced warplane that is somehow even more technically brilliant than the last one. We've reached a stage where we can afford to get out of this expensive game and accept that, given the available resources of our government and the outstanding abilities of our service personnel, the Typhoon would be a much more practical choice for our carriers.
It's fine to conjure-up this "we must be prepared to defend ourselves against anything" notion but when it comes down to the practicalities of what is realistically likely rather than hypothetically possible, you get a different answer.