He was probably just looking at old marketing materials that mentioned the Platinum. Originally, some of the features of the Limited were only going to be available in Platinum trim, but they decided to just move all of those features "down" to the Limited and ditch the Platinum all together. No idea why that decision was made, but maybe the Platinum will make a resurgence for 2018.
2017 Pacifica Limited - Molten Silver/Mocha
8 Pax - Vac - SafetyTec - UConnect Theater & Sound
20" Wheels - Tow - KeySense - Splash Guards
2018 Mitsubishi Outlander PHEV GT