This has been gone over numerous times before but heare we go again.

Cutting diameter = the size of the wound channel

Cutting surface = the amount of damage within the wound channel (see above)

What's more important? That, I guess, is open for debate but think about it this way.

Lets take 3 Bh's and compare.

Slick Trick Standard:

1" Cutting diameter
2" Cutting surface

This means you will get 2" of surface cutting damage within a 1" cutting area

Rage 2-blade

2" Cutting diameter
2" Cutting surface

This means you will get 2" of cutting surface within a 2" cutting area

Broadhead xyz

1" Cutting diameter
4" Cutting surface (8 blades)

This means you will get 4" of cutting surface within a 1" cutting area

Example 1 and 3 both give you a 1" cutting area but by simply adding more blades example 3 has 4" of cutting surface. Does this make this head superior to example 1? According to what you are saying your answer should be yes. But in each bh example you are still obtaining the same 1" cutting diameter.

Comparingexamples 1 and 2 you are getting a much larger wound channel(cutting diameter)in example 2 (Rage) and they same amount of damage (cutting surface) as example1(Slick Trick). The big difference is that with the Slick Trick all the damage is occuring in a small 1" wound channel compared to the 2" wound channel of the Rage.