You just don’t understand basic physics if you think there are other sports that aren’t actual combat sports that are remotely comparable in impact to football. Rugby doesn’t have comparable high speed impacts on a regular basis.

In terms of the strategy, very few sports have the discrete, precise play calling strategy that football does. Every sport has small picture tactics and broad strokes strategy. Football still has the small picture rule based decisions that are the bread and butter of most sports. But they’re unique to each individual play call, change 70 times per game, and are completely different from week to week.