I agree. I would hold on to it, unless working outside with sunlight is extremely important.
Another MBP 13" panel is 9C9E it's 225 cd/m. Only a little bit brighter than this one.
9C89 on the first alu macbooks was 277 cd/m. (but it had bad contrast, colors, blacks and viewing angles).
(measurements from notebookjournal.de)
I had the first aluminum macbook 2.0 as well. The screen was not nearly as nice as this 9cc2. Contrast was very poor. Also, i don't believe it was signicantly brighter. I'm staying with this one myself.