You didn't say that the LeFH vetted faster than the ML20, but you pointed out that Soviet models give less XP without the context of larger Soviet squads. It doesn't matter how much XP the single model gives, but how much a shot gives. With Soviet squads being 1.5x times larger than Ostheer ones, it makes sense that Ostheer squads need to yield 1.5x times more XP, because larger squads have a higher chance of being hit due to covering a larger area and you hit more models in general. How this plays out in detail from shots hitting in the middle of the squad to only clipping some models with their far AoE is difficult to answer. Maybe MMX knows more, but I remember him saying that TTK (in the case of infantry vs heavy tanks) does not depend on the squad size. But again, the only things I wanted to point out is:
1. Soviet infantry yielding less XP is a necessity due to larger squad sizes.
2. USF and UKF exist, which yield fairly high XP values compared to Soviets.
As a last point, there are also Soviet Penals builds which combine both high cost and large squad size.
My point is that there in nothing to support the theory that Lefh vet faster.
If you want to talk about XP gain taking damage also contributes XP so in a case of grenadier vs conscript things are a bit complicated.
I have not tested but I am assume that one would have to inflict equal (or even above since one will probably awarded more XP for a kill than damage) total x1.5 to conscript squad to get the same amount as grenadier squad. One might be able to get that much damage if a squad is clumped up but I doubt one would be able in normal spacing.
I you are interested in exploring it more I suggest testing it or try to theorize using the scatter tool.
The dive bomb has been removed from Jager Armor specifically after the community requested it to be, because artillery to bleed out your opponent was one of the few counters to Elefant builds.
Yes had pointed out that this abilities should be removed even from the first commander revamp (2018) and unfortunately took several year before it was implemented.
https://www.coh2.org/topic/81270/commander-rework-approach
Sextons and Priests surely are a contributing factor. But if you look at the commanders in Ostheer and OKW back in March-June and the fact that your ML20 when in doubt would lose the shoot out (at that time especially with CB), it is not surprising that ML20s are not popular.
My point is that according to the available stats and for the time they avaiable Combined Arms Army remain one of the most popular soviet commander in load-outs and that is because of the ML20 and the synergy with rest of the abilities.
In sort I doubt that ML-20 does not somehow cut it. Else people would not bother having it in their load out.
At least in the current build, Axis have a very good counter to emplacements and infantry based arty with OKW's Stuka.
Yes they have, vet 1 ability is quite good.
I personally would still rather use an Lefh if my opponent does not have off map counter.