Yeah, but more importantly different. People are going to read your movement patterns, carefully place attacks, use aggressive momentum and have a wide variety of set play. The AI won't do any of that, but it will hold better than the vast majority of players and is pretty much immune to throw attempts.
Tell you what though, most perverted players gave up on it because they find impossible to do. I like the fact TN set the bar higher to make these on-disc swimsuits unobtainable offline back then.
Sad that they gave a patch in Vanilla 5 that makes them easier to obtain online via ranked.
Honestly I completely forgot about the swimsuit unlockables. I was just thinking of using the difficulty to improve my game lol. Now that I remember, I don't think I want to try out the legend AI because I don't want to unlock the swimsuits XD.