Wrong, if WW2 pre-Tiger…
Matilda II, well armoured[albeit not 88-proof], but let down by being slow & criminally prevented from firing H.E. rounds…
Entered service with a gun and armour that were better than anything else it would face for the first 2 years, it had HE and it was issued for use in North Africa at least (precious little though), although it was a poor round having too little HE fill due to the gun calibre (although it was better than nothing)
KV 1, again well armoured & equipped with a fairly capable gun, but hamstrung by poor sights, ergonomics, communications, smoky/noisy Diesel mill & stlll vulnerable to that 88…
That 88 was the trump card, & could neutralise all line-of-sight opponents…as was the KV1 with its F34 the Tiger chassis provided a reasonably proof vehicle as was the KV1 which could only be dealt with by the relatively few 88mm with good sights & comm’s to project that power standard for all German tanks and most Allied nations as wellagainst all other tanks/infantry/A.T. guns/mines/field artillery/pill-boxes & etc as was the KV1’s F34 76.2mm, we also established that the 6pdr killed the first three Tigers the western allies knocked out, one as they did not expect a British tank to come from that direction (too steep a climb) and the first two because for all its good optics they could not see the towed guns and crews firing every weapon they had at them (including rifles and LMG’s) and were penetrated at 800m range (by the time the 17pdr was also entering British service with the first Pheasants already in Tunisia)
Tiger was not 88mm proof though since you seem to put that as a measure (nor Soviet Zis-4 57mm, 85mm AA/AT, british 57mm 6pdr and 76.2mm 17pdr proof, all of which were in service, hmm seems the allies had more guns around that could penetrate the Tiger than the Germans had that could penetrate the KV1 when it was introduced)
M1 Abrahms when it changed to the 120mm L44 only had anti armour capability with no HE round provided (Has been rectified with several different expensive types to replace the cheap HESH the 105mm had, did that mean it was not an MBT?, then the M1 also has a short barrel compared to most other MBT’s L44 as opposed to L55)
The KV1 in its day had a very powerful tank gun able to destroy any tank then in service while they had to get insanely close to even have a slight chance.
So far all your claims are based around the Germans sticking the 88mm on a hull and saying it was more powerful than anything else around, well the KV1 and T34 fit that purpose and later versions rectified many of the other ‘fault’s’ you list.
You also don’t seem to have ever seen Tiger I31 which I am fortunate enough to live near and it is noisier than a T34’s engine and smokier, in fact all you list about the smelly diesel mills go the same for it. Petrol was and still is a poor second choice for a large engine and saying that is a leader for a modern MBT when no MBT uses them is a bit odd.
The Tiger B incorporated the Panther sloped armour/L 71 hi-velocity gun features…
Incorporated the T34’s sloped armour
Earlier panzers were simply too lightly built to heft that kind of heavy metal about the field…
So was the Sherman but hey they managed to fit the 105mm from the AMX 30 MBT into them successfully
The modern MBT is designed to emulate that Tiger proof-of-concept…
Tiger was an assault tank pure and simple, it was originally used in mixed Battalions with Panzer III to guard the flanks, The Tiger was a response to Allied tanks not a original idea
How well did those light AMX/Leopard 'MBT’s actually go in combat?
In the combat they have been used in they did well
Did the Israelis want them?
Israelis prefer heavier armour, immaterial though as due to French and German government rules neither tank was available for the Israelis so they assisted with the development of the Chieftain (then the British government broke the deal and gave the Israelis Centurions as compensation when they were withdrawn from British service)