Almost all of my testing was done with Klaus Kuhlmann (I might have played a couple against Rich White), and the last one was against Gary just within the past couple of weeks. Aside from that last match it would have all been done in 2012, I think -before there was a formal testing team.
I believe there are different ratings for Prussian and others' musket effects. Klaus used to always take the Prussians, and regularly beat me (yes, I know testing is not about that really... and anyone who has seen my written reports know that

) At any rate the one time he allowed me the Prussians was Kolin (a Prussian loss ... ) - and Nick Bell's maps don't generally have roads running through built up areas (or towns, if you will). I did a cross country march down the Austrian's left flank, and went all in there. I drove the Austrian flank in -however, I didn't really like the thought of assaulting up hill. I guess with good reason.
Now in the one I played Gary in, he gave me the French/Reichsarmee side in Rossbach ... and in this one the French side is pretty disorganised and basically strung out in an extended march formation. I never did get my command's sorted the way I liked to (it would be better if the color coding was view by brigade probably ... I can tell you in the next title I don't think it matters so much, just based upon the OOB's were not structured in the same way anyway, so you have to basically work out the leadership hierarchy before you create an OOB anyways ... it is kind interesting that the color coding that you do get from that looks to be linked by where you have units within the OOB -and I don't mean in the same 'Division' as I have coded OOB files where different divisions right next to each other end up with the same color ... kind of annoying, but you copy and paste that org elsewhere within the army structure on the OOB... different color. That being said, if I think about it I will see if they are willing to add in different colours or different amounts; what with hexidecimal coding, you got a fair amount to choose from.
Anyways -back to Rossbach ... I basically gave up trying to organise within the army, corps, div structure once I saw it was a race for position. I wanted lines on high ground, along with arty to shoot over the top (mind you I got some feedback that this was not always done such in a lot of time periods ... so that also looks to be something that might need a little change down the track -probably as an optional rule, since you can use the Musket/Pike engine to do a lot of different periods -it is all in how you adapt it.
...I put my cav out on both flanks (sorta ... as I had two armies I guess I used the Reichsarmee side as a reserve -one that was out of line of sight ... they are generally pretty poorly rated, morale-wise ... lots of E rated units in that scenario). Cav to basically protect against other cav -and to provide a threat that needs to be covered at the same time.
And Gary had to assault from lower elevation - in Rossbach, the Prussians are outnumbered (in real life they still won) ... in this case it was a little like trying to take on Cemetery Hill at Gettysburg -the way I set up. It was an attritional trade off, and one that did not go well for Frederick.
The thing about games that use enforced cav squadrons - you will find that they get used to surround forces -I don't know if it is something that is considered gamey or not, but it still will happen.