Mandy and Jackie had very similar performances. Both entered the temple with 2:00 minutes left and both began in the Gargoyle Room, which only led into the Cave of Sighs. Jackie had a harder time navigating the Cave of Sighs, but both girls covered their partners' tracks slowly. Jackie's partner cleared one room farther than Mandy's partner, but that is negligible since the guard was in the Swamp. Mandy at least tried to head up from the Bamboo Forest, so that was one "saving grace" for the run. Both girls found the key in the Tomb of Ancient Kings, but neither attempted to use it. Jackie didn't originally push on the stone wall hard enough for it to break down, but she finally got it down. Jackie was able to clear the Dungeon more quickly than Mandy could ride the Well, but they couldn't do anything about how fast the elevator operated. In the Pirates' Cove, Mandy immediately knew what to do, while Jackie did not. Jackie spent 45 seconds in the Pirates' Cove, while Mandy spent a few seconds less in the room.
Overall, I'd say that the two were on par with each other. They were equally slow in following their partners' paths, and they were equally slow in completing objectives. Neither showed any extremely remarkable qualities in their runs, so I wouldn't necessarily say that one of the girls was better than the other. The one thing that may have been even moderately more impressive about Mandy's run was that she tried to go up from the Bamboo Forest.