The following may give you some ideas on where to start looking. My preferred method for doing this analysis is to get the images in Photoshop and do a side by side comparison using the eyedropper tool identifying shadow, mid tone and highlights in each image for comparison.
If you create the following layers in CS3 on top of the second image then you get close enough to the first one to get some idea where the differences in RAW conversion are:
1...Brightness/ Contrast Layer
Brightness (-23) Contrast (-1) - the second image is brighter than the first and is driving highlights into clipping/saturation.
Saturation (-20) second image is more saturated than the first
Input(44) Output(53) - the tone curves are different between RAW converters.
Mid Tone (C/R+19,M/G-5,Y/B-14)
Looking at the above you may want to reduce the colour temperature of your conversion (move to Red in the mid tones/shadows) reduce brightness and saturation. This should (may) bring you closer to the first image.