Comparing Scenarios

I think that comparing The Bad Samaritan to a fight between two high school students is very difficult. Yes, it depends on the sizes and age and gender but they're still not very comparable because of the size of the crime/action. When it's two high school students fighting each other, they both have a pretty fair chance of winning. However, when it's an elementary school student fighting a recently high school graduate, and the elementary student is fighting for their life, that's unfair. I just don't see how you could even compare those two. Yes, you could argue that not all high school students are the same size, weights, and gender. However, it's very unlikely for one of them to end up dead. This is why I feel like comparing this two scenarios is very difficult, since they are completely different situations.