In this case, why so picky about nomenclature of ancient war machines?
Because, you know, M3 Lee was first introduced during WW2.
Its equally "ancient" as Tiger, hell they both have seen conflict for the first time in the same theater was war.
M3 HAS a Turret, and an "an archaic" sponson mounting for the main gun.
It was a stop gap because USF factories could not produce a turret of 75mm gun, now if you want you can put it the same class a Tiger, you will probably be the only person on earth who does that.
Now you can continue this semantics BS on your own, I am not really interested in wasting my time and the time of the people of this forum, with you little crusade "prove Vipper wrong".
BB and have a nice day.