Prove it...
Sorry can't. The Win98 machine is mine (among a few) but the XP was for a friend for whom I had to do work and had it home for a few days. Also, the benchmark link which you provided say 256 KB RAM is needed to run the program. I guess my claim is based on the time I had my friend's machine and saw no improvement in how snappily windows opened nor speed in web surfing.