I'm probably going to put some noses out of joint, but what I will say is not just for this purpose.
Whilst the figures undoubtedly show the success Chiltern are having, it is a skewed point of view to think of them as the only decent TOC running to London, or anywhere else.
With the exception of Small Heath to Aynho Jcn (which eases after Dorridge) there is not a fat lot that wants to use the same route. Voyagers are interfacing once per hour each way as far as Leamington, where the services via Coventry double the figure. Freight is not running in any great quantity either. Add to that, they have a newly refurbished terminus opened especially for them to alleviate the one location of hassle they did get at Snow Hill.
Chiltern have the luxury of an almost insular and cut off network (note almost) and so they have hardly anything running to impact their services.
I'm struggling to think of a route on a par in terms of it's relative quiet, versus it's improtance of linking England's first and second cities, they really are in a very lucky set of circumstances which contributes in no small part to their success. That and the compactness of their operations. It's hard for them to fail after they've been doing it for so long.
I don't begrudge Chiltern the success and plaudits they get, but I can't help thinking that the people who salivate over them a little too much would be shocked to realise that if they tried to run even half of XC, or EC, or EMT operations, they would not make a roaring success out of it.
I hope my post makes sense and doesn't seem like just a rant, I just think that with all things being relative, their operations can be viewed in light of what they have to work with, that any TOC would dream of.