Those armies were already difficult for the Han. The Han has got better against everything else though
I don't see that at all.
They are slightly worse against foot - because their 2nd rank shooting now only hits on a '6'
Against mounted they are only better IF you never took caltrops before. - and all the Han I've ever faced took them.
They now have to deploy their caltrops in the first 3 moves (and I think we've been very generous in allowing them the 3 moves !)
- after that they must stay where they are or offer a target to mounted with lance or light spear (or chariots)
Assuming the mounted are not cataphracts and not in single rank it's 3 dice at 5 plus 1 at 4's against 3 dice at 4 (i.e. about 50:50)
This is not as good as the 3 dice at 4 against 3 dice at 5 they used to get (when caltrops have been placed).
The problem with Han was always the fact that you couldn't approach them with mounted because they could always place their caltrops as soon as you get into charge reach.
In effect they could push enemy mounted off the table. They now behave more historically.