Youtube videos from the previous posts show that the SP4 is surprisingly good at gaming... for a tablet this size. It appears that games released before 2012 run fluently with decent settings. Newer games (AAA ones) are way too much for the SP4. If I was stuck with only one device on a remote island and gaming was a second priority to me, I would pick the SP4. However, something like the New Razer Blade will blow it away. I'm really glad I pack my Blade along my SP3 whenever I travel.
You say that, yet i've seen even the SP2 playing gta 5 due to its lack of throttling. granted on the lowest setting, but the fact remains it was playable. I see no reason why the SP4 couldn't play some AAA on low settings.