I'm not too sure what the numbers are for the 3.2CL. However, I don't think power is going to be an issue. The stock WRX is good for 227 HP & 217 ft/lb of torque. There are also a host of modifcations to bump that number skyward. A great place to start is a Cobb stage 1 reflash. IIRC, that's good for a little over 250 HP and you don't even get your hands greasy.
After that, an uppipe/downpipe & another reflash (stage II) should be good for a nice, reliable 280HP. From there, things start getting more expensive.
Also, before adding any more power, I would upgrade the brakes (SS lines, fluid, more aggressive pads), tires and swaybars.
In short, a WRX is MUCH quicker than a CL. I would think your primary concern would be fit & finish with the interior. The Acuras have a much more 'upscale' feel than a WRX.
Good luck with your purchase.