Difference between union and confederate troops

[Sandermatt]

Hi, I know the confederate soldiers are supposed to be better and melee combat and worse at ranged combat. Is this solely a result of having less equipment available, or is this reflected in their stats?

[Koro]

It doesn't work like ugg where these are the traits that are innate as such. 

CSA troops do however start our better trained then their union counterparts so the stats on them are generally higher.

They don't have access to as many weapons through to compensate 

[Koro]

People have very different opinions on this. I'd say the Union campaign is harder but man ysay the opposite.

As far as I understand, the game tries to impress on the player the difficult time the Union was having initially and then it will turn as the CSA starts lacking men and supplies. 

[Sandermatt]

As a follow up question. Is the confederate campaign assumed to be much more difficult? (for historical reasons)