Front armour gives it a good chance of simply deflecting, and even the rear armour has a good shot at that (unless I'm mistaken, the calc is still pen/armour x100, so 1/1.9 is still only a ~52% chance to pen). At 240 effective health (192 base, has a 0.8 damage received modifier as per patch notes), even if all 5 shots hit and pen, it needs 4 full salvos to do so.
Cooldown for maxim crew is 0.31 - 0.44 at 4 distance, 1.25 - 1.75 at 5-20 distance, and 2.34 - 3.28 at 21-35 distance. Kubelwagon has sight range 50 and gun range 35, so it can comfortably engage the maxim at any distance it's allowed to by virtue of the map. Accuracy is 0.7/0.55/0.35 (at ranges 5/25/35 respectively) so against the target size 1.25 crew members, any of those ranges are pretty good for it since it compensates the accuracy loss with rather large increased cooldown on the maxim crew (its own cooldowns aren't as punishing comparatively at 0.94 - 1.31/1.25 - 1.75/1.88 - 2.63). Ideally it wants to be at mid or far, which isn't hard when near is 5 range.
I did a real quick and dirty run (replay attached) a couple times over, even giving benefits like yellow cover, side angled shots, and even a scenario where the kubel had to rotate 180 before firing (potentially simulating the kubel having to spend time getting into position around the cone first), giving the maxim crew a free salvo - it won all engagements, by a decent margin. Sure, this isn't a definitive, since I only tested a few times, but the engagements are weighed towards the maxim in 2 of the 3 engagements and it still loses handily.
-
VS
Aphyria
CPU - Hard
P.S. - yes, I know the replay is awkward, I've barely used cheatmod but even I couldn't stand the idea of someone trying to claim that a kubel can't beat a maxim crew and actually getting away with it lol.