I am using touch.deltaposition and when i swipe on different devices with higher or lower res it swipes either faster or slower and not sure how to fix it.
I usually end up doing this by using percentages of the screen instead of using the raw values.
Something like:
float delta_x_perc = touch.deltaPosition.x / Screen.width;
float delta_y_perc = touch.deltaPosition.y / Screen.height;
Hope that helps!