It is very compatible with legacy 680X0 code by bypassing the jit compiler and passing it on to the 68060 -- something the NG's can't do.
This is not correct. The 68K is used only to cold boot the system and load the kernel. After that, all 68K code is emulated. Perhaps you confused the option of disabling the JIT for incompatible applications, but all that does is force them to use the interpretive emulator.