AoF has an absurd variance, even more than Spin&Go.
I honestly don't believe there is a winning strategy.
Some examples:
I've won 20x in a row with any two cards.
Others, I lost 20x 'in a row' practically selecting only premium
hands.
It may be that with a huge number of games we start to converge towards a draw, but I can't say because I only played many games as soon as I joined GG.
A positive factor is that the greater ease of hitting jackpots, for example.
I also believe that people who choose these modalities can get extras on the daily leaderboards in addition to good rakeback. Apart from these cases, I don't believe it is economically positive.