Daredevil has traditionally been quite dark in tone, at least for the last couple of decades. There's a lot of death and psychological breakdowns in Matt's past. Waid's version is a lot lighter, and the art is a lot lighter too.

i.e Take this cover from very recently

http://houseofflyingscalpels.com/2015/05/02/cover-of-the-week-294-daredevil-15-by-chris-samnee-matt-wilson/

And compare it to stuff like

https://markbertolini.files.wordpress.com/2013/01/alex-maleev.jpg
http://cdn.hitfix.com/photos/4531109/4.-Brian-Michael-Bendis-and-Alex-Maleev.jpg
http://pelerinli.com/wp-content/uploads/2015/04/tumblrlgllhduta41qziacgo11280.jpg

Huge difference in tone.