Alas, cryonics may be screwed with regards to this. It simply may not be physically possible to freeze something as large and delicate as a brain without enough damage to prevent you from thawing it and have it still work. This is of course is no big deal if you just want the brain for the pattern it contains. You can computationally reverse the cracks and to a lesser extent some of the more severe damage the same way we can computationally reconstruct a shredded document.

The point is, I think in terms of relative difficulty, the order is :
1. Whole brain emulation 2. Artificial biological brain/body 3. Brain/body repaired via MNT 4. Brain revivable with no repairs.

Note that even the "easiest" item on this list is extremely difficult.