Don't forget to watch what position the person is downed in. A lot of face down rising attacks can be sidestepped, although it's somewhat character dependent.
But if you end up sidestepping a rising attack you're guaranteed a combo for the most part.
Also, a rising attack on hit is only +2 or +3 it looks like. So they're hardly at any sort of real advantage. And since they removed delayed rising attacks from the game, you shouldn't really ever be counterhit by a rising attack, unless you're trying to crush it like Marginal said above.
But if you end up sidestepping a rising attack you're guaranteed a combo for the most part.
Also, a rising attack on hit is only +2 or +3 it looks like. So they're hardly at any sort of real advantage. And since they removed delayed rising attacks from the game, you shouldn't really ever be counterhit by a rising attack, unless you're trying to crush it like Marginal said above.