Katniss and Rainsford are very alike. One example of how alike they are is when faced with death they fight very hard to avoid it. Another example is Katniss and Rainsford both relied on skills they learned before the situation. A third example is both Katniss and Rainsford are excellent hunters.
The story itself is also very alike. Both General Zaroff and President Snow kill people for a cause. Both THG and TMDG