Interesting analysis, JV, and no doubt some truth in what you say PS, but with respect there is another factor in play at present which renders this discussion academic.
Demand for all the long-haul Airbus widebodies - A330-200/300, A340-200(!) through 600 - is currently vastly greater than supply. Hard to believe that in 2002 BMI parked one up for much of the year. Right now, thanks to the likes of Etihad, you just cannot get your hands on these aircraft in the aftermarket. Don't be fooled by any listings you may have seen which suggest otherwise; all A330/340s are snapped up as soon as they become available, and this situation will continue for some long time. Last Friday I heard of one carrier offering a $100k/month "lease premium" over market rate for a four year operating lease.
Okay, these market conditions do not last for ever, but talk of A350 etc is entirely academic in the real world and of no relevance to the balance of demand and supply for the current inventory of aircraft.