So I am looking at it like this.
Grand Master= Bretonnian Lord
Battle Wizard Lord= Prophetess
Captain of the Empire= Paladin (Oh look I can buy mundane equipment!)
Battle Wizard= Damsel of the Lady
Knightly Orders = Errant Knights
Inner Circle Knights = Knights of the Realm
Reiksguard Knights= Questing Knights
Demigrif Knights= Grail Knights
Halberds/spears= Men at Arms
Crossbowmen=Peasant bowmen (I always wanted them to be str 4)
Pistoliers = Mounted yeoman
No equivalent to Pegasus Knights and there you go.
It misses the Blessing but gains +1 Armor save
Loses the Magic Resistance but gains all the Lores of Magic
Loses the Virtues but Gains Hold the Line.
Loses the Lance (Except in the case of Demi-grifs which gains monstrous ranks) but gets I think better Knights for cheaper.
You could even use Markus Wulfhart as Bertand and Wulfhart's Hunters as Bowmen of Bergerac.
This is of course not even including all the TONS of other options the Empire now has. This is again why I think Bretonnia needs more then Dev Charge and small adjustments to Knights to keep up with the Army Book creep.