@Midden
I agree that being on the offense is harder then, even more if the enemy has air superiority and prepared positions.
But nonetheless, afaik GER tanks did some few succesfull attacks, as also other nations. Losses were of course higher.
I also think that if US Divs had used Persing instead of M4's, they had far less losses and faster breakthroughs.
Even with less reliability, if GER could keep tanks in the field, US would have been able much more so maybe.
@NikephorosSonar
At Kursk, that might be not surprising as at that battle GER was advancing into very well prepared defense lines in deep.
@f1nalstand17
True, the F might have come, but already PantherII was dropped and incorporated in PantherI(G) for setting up new standards, well who knows what would have happened hwo fast.
And the Schmalturm was really a design concept. From Krupp for TigerII, I have to correct myself here. Both turrets for Henschel and Porsche Tiger II designs were done by Krupp. And for Panther it was Rheinmetall for PantherII and Daimler-Benz for Panther I.
PzIV main reason was added firepower maybe, and also streamline production, But it is written that turret was too heavy for PzIv.
And also yes, the turret design for Porsche KT was harder to produce and also had a problem with shots ricochet from the turret to the top of the tank when mounted on Henschel chassis.
The Porsche chassis is kind of different in some ways, turret is at front or at the back of the tank, while at Henschel it is in the middle as we know it. Don't know if it had the same ricochet problem. After all the turret was designed for that chassis, but well, more tanks had that ricochet problem and it could be solved later on with some changes.
@Lech Kaczynski
Right.
It may be interesting that Patton was fine with the M4 too in regard to the doctrine used.
He thought this way about usage:
If enemy tanks are encountered. Fog is to be leayed at once, tanks should withdraw.
For that task one tank should have loaded a white phosphor grenade at all times.
(That rings a bell why maybe the M4's that disabled the KT had used that white phsophor that quick..

)
Than TD should called in, CAS, or ART should finish off the enemy tanks.
Once that is done, Own tanks should advance again.
He also argued about that many times the TF are hold to far behind, and that they should instead follow up the initial thrust etc..
That is quite along the doctrine of US forces of that day.
But thats different to GER/SOV, where tanks were seen to clear the situation with the other units around end engage the enemy.
And I think, with a different tank like the Pershing or having even a heavy "like a M-103" around would have changed the US way of tank usage.
At least with Pershing at hand later, US-tankers were not waiting for Art/CAS that much anymore but advancing on its own.
@1alexey
Do you have numbers about the M4's in stock/depot of that times?
@Dark Jakkaru
Agree here mostly.
TigerII, only build ~500..
And afaik at West Front only about below 500 Panthers at all time. As Allied Intel likely knowed that, they might have seen no need at the strategic lvl until the reports from units got more "demanding".