Actually the two spots have rules and you are a player only plays by the rule or else you play out, football and rugby it's a two different sports entirely with different rules that guides them so you don't need to each other and you can't compare both because what works in football might not work in rugby and what works in rugby might not works in football, for the players in football pretending to have injury due to a marking done to them it's called " taking advantage" in football and it's very much accepted so before you judge either of the games you need to know how the rule works first, each of these sports as so interesting and enjoyable only if you know the rules that guide them.