"The 68000 uses much wider microcode (85-bit microinstructions compared to 21 bits in the 8086)." is not what I remembered.

Another source says "The actual internal representation is a combination of "microcode" and "nanocode". The 68000 has 544 17-bit microcode words which dispatches to 366 68-bit nanocode words." which sounds right.

Somewhere around here I have a very detailed article about this which might not be available online, but it would take some time to dig it up.