So I also wanted to know the bezel difference, because a screen looks just that much better with less bezel
I didn't compare the pictures, but I got the specs from the Apple page (of the new 2010 MacBook Pros) and calculated the size of the bezel using basic trigonometry (I just divided the screen into two triangles (basically along the line where you would measure the screeen size of 15.4 inches/17 inches))
Because the ratio of screen (I used the pixel ratio which corresponds to the ratio of the screen size) is 1.6 you can use the tangens tan(1.6) to find the angle of the triangles where I divided the screen (It's approximately 57.995 degrees). Now you can use a/15.4 = sin(57.995) to find the width of the screen itself. b/15.4 = cos(57.995) is the equation for finding the depth of the screen.
I found that the screen of the 15.4" model has a width of approx. 13.06" and a depth of 8.162". Using the same method the width of the 17" model is approx. 14.416" and the depth 9.01".
Now I just subtracted these figures from the dimensions that are given on apples website for the whole of the macbook pro (I guesses that the width and depth of the whole thing would be almost equal to the dimensions of the bezel because the screen covers the whole macbook pro and therefore the screenpart should be almost equal to the width and depth of the whole thing).
I got following values for the bezels:
the bezel on top of the screen on the 15.4" models: ~ 1.658"
the bezel on top of the screen on the 17" models: ~ 1.50"
bezel on the side of the screen on the 15.4" models: ~ 1.29"
bezel on the side of the screen on the 17" models : ~ 1.054"
So there you have it the bezel on top of the screen is approx. 9.5% smaller on the 17" model and the bezel on the side of the screen is approx. 18.3% smaller on the 17" model.
You also have to take into account that the screen on the 17" is already bigger and in proportion the bezel looks even smaller.
So I hope this was helpful, as it interested myself how much the difference actually was, and I apologize if it was not entirely accurate, as I relied on apples specs for the whole MacBook Pro and not just screen + bezel, but I think its fairly accurate.
Greetings from Germany