I'm not a big conspiracy conspiracy nut, but as a kid I remember sitting there thinking how little information was coming out of the Viking 2 landing site. All of the pictures and the analysis was about Viking 1 on Chryse, but nearly nothing at all from Utopia.
Carl Sagan's Cosmos dedicated an entire episode to the Viking program. Again, nearly 100% of it was about Viking 1. All the pictures except 1 were of the Chryse landing site.
Dunno, it just always struck me as odd since both places were different from each other from a geological, latitude/longitude and terrain standpoint.