Maxamet has one of the best edge retentions available that is similarly hard to sharpen. M4 is still a beast in the edge retention department but has pretty good toughness and is a favorite steel of mine and wished more mid-sized fixed blades came in it, but I'm pleased with the Vanadis 4E that is available and reasonably similar from custom knife makers, especially from Europe.
So, maxamet has better edge retention and considerably less toughness. CPM M4 has great edge retention and much better toughness than maxamet.
For the record, I the bailout handle is probably not as fragile as you would think. Modern composites are tough as heck because they flex instead of break. But, I do think they missed the boat on the hardness of the steel. The only benefit I can see there is the ease of sharpening in the field, but then just go with a less expensive steel like 5160, 52100, or A2 if you want that little bit of stain resistance like 3V.
Check out knifesteel nerds and search for maxamet or M4. Really, almost any article will have a graph of steel toughness and a chart with relative edge holding as compared to 440C.
Here's the toughness graph from the most recent article as it was easy to get from the main page. You're probably looking at nearly double (or more) the toughness with CPM M4 at 62-64 HRC (BM spec for contego) compared to Maxamet at 67.
https://knifesteelnerds.com/2020/03...-3rd-generation-powder-metallurgy-technology/