I bought it for PC anyway.
About requirement, I already played with unsupported games years ago (the Sims 2 Season with a PC from 2001). My old PC barely supported Sims 2 Apartment Life and didn't supported Saints Row 3, yet I was able to play it.
The PC I now have, was bought for videogames (at least Sr3), so probably I will be able to play Sr4 with low settings)
About requirement, I already played with unsupported games years ago (the Sims 2 Season with a PC from 2001). My old PC barely supported Sims 2 Apartment Life and didn't supported Saints Row 3, yet I was able to play it.
The PC I now have, was bought for videogames (at least Sr3), so probably I will be able to play Sr4 with low settings)