Max’ switching to subobject mode also takes a performance penalty at times it takes a second or so to load the interface properly, but I have yet to use Blender on the same mesh sizes so I cannot compare those. Recent versions of Max were more stutter free, 2016-2018 were quite bad in my experience.
Apart from edit mode speed, things like linking in files, automatic material propagation (where if you manually assign material Y to Material A, it will stay like that upon relink) and UV propagation upon relinking (through a UV modifier) are also major time savers that Blender has to do without. Same goes for a Edit poly for iterating non-destructively. For me those are the main features that would need to be added alongside performance gains.