See, you seem to be giving another poster (rather more learned than you are in the intricacies of bus operation, it must be said) a hard time at the moment over unsubstantiated statements yet you have posted the above, most of which is... unsubstantiated.
Your attempt to use the low sell-on price as a stick to beat the articulated bus with is absurd. It suggests that you know very little of how buses are operated in the real world. Sell-on price is irrelevant if buses of any kind are depreciated over 15 years and actually used for that long, which in London with a mid-life refurbishment is not impracticable. Then, once it is time for them to go, they can be released for scrap value without any concern about residuals.
The point you attempt to make about operating costs is also ill-founded. It would hold true were the artics' capacity not required, but in London, it was. When routes were converted back to double-deck operation, more buses were added into the mix, as were more drivers, and the latter certainly aren't cheap in London. I would venture that, when used in that kind of high volume service, the cost of operation per passenger mile is little different to that of a double-decker with its much lower capacity.
One other thing you conveniently also forget to consider in your bashing of artics is that non-existent sell-on values will also apply to hybrids of all kinds, including the New RM. It seems now that hybrids have been in operation for a while that battery life on them is going to be around the 5-6 year mark, at which point operators need to find in the region of £35-40k for a new set. That's not a planned cost, by the way, as when the batteries will fail cannot be accurately predicted - but it's still a cost, and it needs to be factored into the total operating cost of a hybrid bus. They don't look quite so good when that is considered, do they?
So let's say a hybrid comes out of London at 10-12 years old on its second battery pack. Who in their right mind is going to buy it knowing that a massive expenditure could well be around the corner? Nobody is, and hence it seems inevitable that when the time comes that hybrids are moved on from London they will either go straight for scrap or in some cases be re-engineered into conventional diesels at a cost probably equivalent to what they are worth. Of course, TfL's bus people are actually quite intelligent as a bunch and they will realise this, hence it's quite likely that hybrids will serve a full life in London - just as the artics could and should have done.
You need only look at what Ensign sold some of the early hybrids for to see that they are more or less worthless on the second-hand market, and will remain so.