I heard there was no plan to make a Universal (Intel-native and PowerPC native) version of Myth 2. I heard it was because the speed of currrent machines was plenty fast for it to work under emulation. I say heard, because some guy in the lobby said this, and I don't remember who. But I have some facts of my own.
See, I had occasion to try out Myth 2 on an iMac 17" 1.83 Ghz Core Duo (Intel chip). I wanted to see how well, or if, it worked in emulation under Rosetta. Rosetta is Apple's technology that translates the code for an application that was optimized for IBM's PowerPC* G5 (or G4, or G3) processors into something the Intel chip can recognize.
It was flawless. I forgot to look at framerates! But I can tomorrow. However, it looked like it does on my G5--very sweet. In other words, if the rumor was correct that there's 1) no Universal version coming, and 2) that it was because it was already good enough, it is 1) ok and 2) quite correct.
*PowerPC is the line of processors that Apple has been using for about 12 years, made by IBM and Motorola.