I admit that some times , marc can be so sexy
in the bed scene, every time i see it, all i can see and focus on is marc, the scene was all about marc
I agree with you that Marc was the most "present" in that scene (don't know how else to say it).
In this particular scene I thought Hanno was very, very convincing. It looked like he wanted Kay for diner.
Of course Max made it all up with that last glance.
I think the two of them have different characters.
Marc is kind of explosive, emotional and Kai is more quiet, controlled, subtle. Maybe that's why Marc looks more present sometimes.