Depends on the person, I find it much easier to loose weight by doing more exercise... Although I do basically eat continuously, so I guess the extra exercise is eating into my eating time...
Me too, eating too much seems to be a habit which I'm really struggling to break. I've got meal sizes right down but snacking is still an issue, and for that reason I find it easier to lose weight by just riding more.
It is famously much harder to lose weight through exercise than it is through stuffing less food into one's gaping maw.