Re WW2 and French tanks, two of their tanks the S-35 and B1 were superior in terms of protection to German tanks but the French problem was mostly doctrinal and the way they fought wasn't made to counter the Blitzkrieg. It could have if given a chance as they'd have fought a WW1 artillery based battle. But all French tanks had a problem with 1 man turrets where the Commander was simply over worked having to perform the actions of gunner, loader and trying to command the tank and any nearby forces.
With regards the Clans and their tank crews this is how I see they get round their Honour issues.
1 - The Horses and other (if there was any) vehicle minded Clans, but mainly the Horses see the whole crew as a single Warrior. They all work together and share the honour of battle between them. That way tank crews are not as 'honourable' as the Mechwarriors but by working as a team (which the Horses emphasise for example) they can bring themselves honour. This works 'best' with small crews who would stick together and work together.
2 - Less vehicle minded Clans also have this, but its not so they can all get honour, its for the most senior crewman who's probably a test down or Solhama who can get that honour, but its seen as a lesser form of fighting and not as capable, but still recognised for what they do.
3 - Real hardcore traditionalists (Jags, Falcons etc) "NO HONOUR FOR YOU! A DISHNOUR ON YOUR COW!" Tanks are viewed as at best a useful neccessity for garrison duties and the like and the realm of Solhama personnel who are expected to do something useful before dying.
Also Re the Spirits and their crewing of tanks. Since 'arming the lower castes' is pretty much a huge no-no for the Clans and if found to be being done a very good case for someone to Absorb you or worse, the Spirits probably got around it with rules lawyering, following the word of the Great Father and Co rather than the Spirit which most of the Clans did. In theory there was no law that stopped the Clans from letting lower castes actually test to try and improve their position and become Warriors, just a massive cultural bias against it that became unwritten law. But if say the Spirits allowed lower castes to step forwards and try to get through a very harsh training regimen and the like that really weeded out numbers either through injury, death or failure, and the end result was say a cluster or two's worth of personnel, then following the exact letter of the Laws of the Clans, they've not done anything wrong as they are not mass arming their civvies.
I would need refresh my memory of this time period but i do recall french tanks were better than Germans but all German tanks had radios and the french only had a few allowing superior on the spot tactical changes to ofset their weakness. Didnt the Germans near the end roll out a couple super tanks weighing something like 200 tons
Re radios this is very true, and German tanks had generally superior layouts with a 3 man turret allowing the tank commander to actually command and direct the tank, not have to shift his focus between 3 jobs. This made them much more flexible and able to react quicker, combined with far superior doctrine to the French, allowed their inferior tanks (the main tank of the German army was the Panzer III which had real issues against the heavily armoured French tanks, whilst the Panzer IV was a support tank at the time) to outfight the French.
And yep they were looking at some super heavy designs, one of which was completed with the Maus tank, which was utterly absurd and was just a waste of resources and would have been a barely mobile bunker that would make a fine target for allied aircraft. There was also a design called the E-100 which they build part of. Both of these tanks were well over 100 tons and are still the heaviest armoured vehicles ever made.
For some intersting vids about French tanks
https://www.youtube.com/watch?v=tMqbkQcDe9E this one very well illuminates the problem of overloading a tank commander and the problem that plagued all French tanks with their 1 man turrets.
https://www.youtube.com/watch?v=lwREJT3KfgYhttps://www.youtube.com/watch?v=PRRdUgAgpug /
https://www.youtube.com/watch?v=VfaVeZ_xjIcand
https://www.youtube.com/watch?v=NNMEobVlfM8 /
https://www.youtube.com/watch?v=71f9or59UdMare interesting and quite amusing, the chap doing the vids is an ex tanker himself and is a military historian so he knows his stuff.