themanfromthatplace,
Debated this myself. I have submitted an application through CAE. I have not yet done so through CTC. Although I did click the application and look at what information CTC require for you to apply. All I can say is that they ask for a lot more info.
As far as my knowledge goes; when you apply to Ryan thru CAE website directly, you are contacted for more information - presumably if the magic computer picks you out of the hat.
CTC are asking for all that info upfront - just as they do if you apply to Ryan through Oxford aviation if you are an Oxford integrated student.
I can't see it doing much harm doing both to be honest - but who knows? Pilot job selection is a mystery to all!