I guess its just how each guy looks at it Dep. I reckon WWII pilots had lots of flight critical stuff to fiddle with, even in combat. Check out some of Bud Andersons accounts.
Not flown any other sims, but I'd imagine with modern jets you'd get most of your info looking forward at the HUD. In IL2, 'lose sight, lose the fight' is where TiR comes in handy.
Fiddling with the keyboard for prop pitch, rads, mixture, trim etc. would drive me nuts now.