If all ressources on a balanced map were equally divided between the two factions, who would have a comparative advantage in early, mid and late game?
This isn't really an issue in CoH2. In vCoH the american and wehrmacht were specifically designed to give one a small edge in early game, and one in late game. In CoH2 both factions earn their veterancy in the same way and they also both have multiple super tanks to their disposal. So in CoH2 it comes just down to whoever has the best unit preservation.
Am I missing out on not using the tactical map?
I find at the beginning yo can just give orders on the small minimap and later in the game it seems so cluttered.
It's a personal preference. I assume you saw players (including me) using it on their stream. For me it's just a vCoH habit that is still useful in CoH2, others might just have picked it up and prefer it over using their mouse.
@Computerheat/Wooof/Milka: I always like to use a sniper vs this, especially since Shocks are 45mp per entity to reinforce, so you can get a nice manpower drain going this way. But I'd advice above all to try and make a good combination of t1 and t2 units (a flamer HT is often a good addition) and maybe call in a mortar halftrack. Schreks and a pak can keep the enemy's tanks at bay, while your combined arms should be about equally matched with his infantry force.