We created TCI images from sentinel via stacking RGB bands and scaling the values and similarly for the planet image downloading the analytic product and stacking the RGB bands after scaling them.

We find stark differences in the appearance of TCI images from sentinel, Planet, and Planet thumbnail for Caofedian region [ 38°55’46.20"N, 118°31’3.17"E] for the date 2018-09-22.

Could you let us know what could be the possible issue here that the planet thumbnail and planet TCI images are so different given that all the images are of the same date?
Planet Thumbnail image of Caofeidian

Planet TCI image of Caofeidian

Sentinel TCI image of Caofeidian