I use C-Tilt because in Smash Brawl I used to quickly press A+direction in order to perform a smash (I think there's no other way to perform this on a wiimote) !
And so, in Smash4, I still A+direction to smash. But the problem is when I try to tilt, I often accidentaly perform a smash, and that's very annoying. In order to perform a tilt, I must gently and slowly move the stick, and press A, woaw, that's so annoying for me ! Yeah, that's because I'm not used to it, but Smash4 gives us the possibility to change C-stick to tilt, so I decided to use this functionnality, and that's so helpful for me ! Since, I don't accidentaly perform a tilt instead of a smash and vice-versa !
But in Crusade there's no option for it, :'( But I heard some people who has configured his C-stick to tilt using XPadder, so I tried using the software, but it's not working