Tomb Raider wasn't bad because of the exclusivity deal only, it was a bad deal because it was a sequel to a recently released multiplatform game, and it was announced first (at E3) everyone assumed it was a multiplat and then months later they revealed the exclusivity deal.
Think of it as if Insomniac revealed this Spiderman game and said nothing about Ps4 exclusivity, get everyone hyped about it, then months later "Sorry, only Ps4!". Lots of people not getting why the RotTR deal was one of the worst in terms of messaging to consumers, hopefully that helped.