The Deus 11x13" coil actually came out a couple of years before the 11" coil. The general consensus among those who had used both was that the 11" was just as deep as the 11x13", but was less nose-heavy on the Deus which made it more comfortable to swing. I don't recall that the 11x13" was ever offered as a stock coil, it had to be bought separately and was expensive. The 11" was offered as a stock coil, which is probably why so many more have them.
I never used anything larger than the 9" coil on the Deus, although it's still pretty deep. I have used the 17" coil on the ctx, and while it does seem to go a little deeper on coin sized targets than the stock 11", it is a heavy one to swing.
Between the Deus with 11x13" coil and the CTX with the 17"........ not sure which would ultimately be the deeper machine, and it won't be easy finding someone who's used both for comparison. If you need an ID on the deep ones; and for some of us that's a big factor, I'd say go with the CTX with 17". If you just need to know that a deep target is present and that it's not iron, then it makes more sense to stick with the lighter, faster Deus with 11x13".