Checking out the MSRP on the 2002 lineup, the 2.5TS Sports Wagon is $1500 less than a 2.5RS Sedan.
Looking at the descriptions, it may be that the TS is an L with a bigger motor, because it does not state that it has 16 in wheels or a sport tuned suspension.
But if it does have 16 in wheels, this could be the sleeper choice. The WRX Sports Wagon is $500 cheaper than the sedan. Go figure.