From: Vermont, USA
Lastly, the 3 attack strength (3 AS) of pioneers won't change the situation I describe above : I you try to destroy a T34 positioned in wood with a 5 AS tank like the Panzer IIIe (or with a 3 AS pioneer), you will need to go to an adjacent hex on the rear of the T34 or inside the same hex (see example below). In most situation, you won't be able to reach that rear favorable position. In front of the T34, I suppose you will need to do a group attack with the Panzer as the attack leader and at least two infantries (pioneers or not, since any of them just add 1 AS to the group), with the panzer positioned in a front hex adjacent to the T34, to get it. If you count the one, two or may be three units that will be destroyed by the T34 while you take position so close to it, that means a lot of resources to eliminate a single threat !
In your screenshot, that's a Panzer II with a 20mm gun. Even the Panzer IIIE with a 37mm gun had a very hard time with the T-34, except at very close range to the flank and rear. In other words, the game results you are seeing are historical given the game scale and I'm not sure why they warrant criticism.
CAPs are meant to reflect good leadership. Use those to shift the odds in a critical combat where you need to make a difference.