Hi CosmicHam,
I’m not MrM1 of course but I do know that the Morgongava uses continuous pour dunlop that has a C3 firmness rating which would be roughly equivalent to an ILD in the low - mid 30’s with Talalay which would be somewhat similar in firmness to the middle layer of MrM1’s mattress. It’s also thinner so overall it would be a fair bit firmer. It would also have a different “feel” than Talalay which is more resilient than Dunlop. There is more about the differences between Dunlop and Talalay in post #7 here.
Hopefully MrM1 will have some additional comments based on his own experience if he tried the Morgongava as well.
Phoenix