Dealers determine who wins a hand, and the amount of the payoff. The literature on blackjack is vast, and much is very accurate. These authors, generally speaking, admire each other and agree with each other s conclusions. In video poker, we have a very different situation. Information to be trusted is very limited, and frequently video poker authors do not speak highly of others in the same field.
Blackjack games are very similar from place to place.
Although good players certainly make adjustments to their game depending upon exactly which rules are in effect, usually the play of a particular hand is identical no matter what the rules are. In video poker, the rules vary widely. The strategy rules for deuces wild are totally different from those at jacks or better, or double bonus, or joker wild, or . . . Nobody is an expert at all video poker games. There are hundreds and hundreds of different variations.