It is not M2CS vs a 718 GT3 to me.
To different animals to be honest;
2 vs 4 seater
NA vs double turbo
1420 kg vs 1600kg
major price difference
The 718 GT will come with PDK summer 2020, so even quicker.
Don`t forget, the 718 GT4 is 10 sec faster on the NS compared to the 981 GT4, that is really a step up in performance.
I want them both