I think one difference between American Football and Football is that American football tends to have specialized events happening. You have field goals, you ha

I think one difference between American Football and Football is that American football tends to have specialized events happening. You have field goals, you have turnovers, you have punts, and so on. Each of them require specialized instructions, someone who is a wide receiver will not share the same skill as a QB. In Football, by and large the skillsets that everyone develops is the same, i.e. good ball control and fitness. There is specialization when it comes to specific positions, but it is not as drastic a change. This could allow you to get away with simpler player models in Football, everyone can basically be modeled by a simple "footballer", instead of different people for "kicker", "quarter back", "line back" and so on. Potentially, this can make sport simulation environments for RL like this easier for football.