ADLG-R Italian Wars French v German City States

My French Italian Wars army took on Simon's German City States in an ALDG-R matchup. My army consisted of  a couple of powerful Swiss Kiel's, a Landsknecht Kiel and some supporting infantry and cavalry.

The French attacked in the plain and the terrain fell well for them. I deployed Gendarmes on the left, the Landsknecht's in the centre and the Swiss on the right:

Simon's army had a lot more Kiel's and fewer light infantry or mounted. Looking at the enemy deployment it seemed the Swiss and Landsknecht's had a clear advantage over the Germans facing them with skirmishers covering their front and units available to provide overlaps so forward they went! The Gendarmes began to redeploy to the right to face the German Gendarmes: 

The extra German Kiel's are struggling on the field-covered hill as French skirmishers rush up to delay them: 

One Swiss Kiel takes a hit from artillery but quickly rallies it off:

Some mounted archers hold the German Kiel's back to allow the Swiss and Landsknechts to move into place:

The French Kiel's charge home! The situation could hardly be better for them, two out of three are elite Swiss, one has a general included, there are overlaps on both flanks and two of the German Kiel's already have shooting hits on them. What could possibly go wrong?!

As it turns out everything can go wrong and the Swiss and Landsknechts take a battering:

From a very positive outlook things have declined with remarkable speed:

One Swiss and one Landsknecht Kiel's are broken, the other Swiss are tottering:

The French have little left in the fight apart from the Gendarmes who are too far away to influence anything:

The army is collapsing rapidly:

The last Swiss Kiel breaks and the army routs without managing to destroy a single enemy base!:

I don't think I've played a game for a long time where initially I'd been so confident of victory only to see everything collapse so quickly! The Swiss and Landsknecht's were both abysmal and were overthrown by the German Kiel's with barely a squeak of resistance. Maybe the King hadn't paid them  for a while......