Since the overall randomness of a casino game determines the percentage it contributes towards the wagering requirements, not all of them will have the same weight.
Online video slots, for instance, are completely randomized and thus contribute 100% to the wagering — with some exceptions.
For their part, table games such as blackjack, poker, or roulette contribute much less since you can play them with strategies that reduce the house edge and general risk, making the outcomes more predictable.