The key to this whole thing is finance, reputation and employment.
They ensure you can obtain the funding unsecured. The loan required for integrated courses are non-existant on the high street, this provides an alternative to securing a parents/your own property on a regular loan.
The organisation itself is highly reputed and produces high quality pilots ready for airline employment, this is supported by their employment record.
Employment rates are currently 100%. Whether this drops off over the next year is anyones guess, however you can be almost sure it will have higher employment rates than other FTOs in the UK. They are partnered with airlines meaning you have a 'foot in the door' and preferential FO placement in airlines such as EasyJet, Thomas Cook and BA.
The reason selection is difficult is they are looking for a specific type of person to turn into CTC's 'product' for the airlines. You get preferential finiancial arrangments and good job prospects, and combined with the point mentioned above means they have a huge amount of applications on a monthly basis; they can afford to be picky!
It's pricey, but in the current conditions if you ARE going to go for integrated, CTC would look like the best option. Then again, I'm biased