Hmmm...now that's a real stumper!....hmmmmm..
Well, I think that "hypotheteicals" are fine; like, I've build a few dio's that have straddled the line between fantasy and reality--involving ghosts and/or scenes that would best be defined as "fantasy"--and I think that's fine and I admire others who venture the same. I appreciate the incentive, and the imagination, and furthermore, if a person really pulls it off, then the sheer inventiveness and skill to bring the viewer along into the builder's mind is a superior attribute of a work.
I think, IMHO, that if a dio is more along the lines of "realistic", and it has notable "historical" errors, then it is probable to assume that the errors are unintentional, and fair to assume that they were indeed the fault of inadequate research--unless the perceived erros are specifically indicated by the title of the dio, such as "Jagdtiger at Juno Beach?"!! (heaven forbid!)
In this case, I would have to assume, if I were a judge, that the modeler was in error, and take points against that. I believe that part of the purpose of a dio is to convey some sense of historical perspective or topical relevancy--even if it could technically be categorized as "fantasy" For instance, in my "SPOOKED!" dio, I have a destroyed PZ IVJ with ghosts coming out of the rear, set in Portigny, France, in 1944. Now, I know that PZ IVJ's could indeed be found in that area at that time in Europe, and also, the "ghosts" (which are depicted "in uniform") sport the correct panzer uniforms for that branch of service and time period.
In another dio of mine, an Sdkfz 222 led by a military policeman follows a group of panzergrenadiers into a graveyard, where the bodies of victims have risen from the graves to seek vengeance--when I entered this dio years ago into the "military" category, some "stickler" judge moved it into the "Sci-Fi" category with the Star Trek and Dr WHo entries!--yet I have correctly researched the uniforms of the military police, with correct waffenfarbe and accoutrements, as well as the particulars of the pzgrenadiers and the Sdkfz...
To be honest, if I see, say...a LATE Panther G with zimmerit and painted in overall Panzer grey, I will honestly NOT give that model the benefit of the doubt, because I willl have to assume that the modeler has NOT done his research--in my experience, most armor modelers are pretty "anal" about their research and portrayals of their models, and if I were to see such a model so provocatively portrayed, I would HAVE TO assume that it was from lack-of-research based upon my experiences with other modelers!
HOWEVER: if it were portrayed in a dio with a soldier spraying on the Dark Grey coat and titled "Breaking the Rules", I would unquestionably give it more leeway--get what I mean?
Little things like "open horned track guides", the perceived "incorrect zimmerit width for that tank" or the "incorrect fire extinguisher type" fall somewhat too close to "rivet counting" for me, and I wouldn't let things like that necessarily jade my opinion of a model--unless it was in a "Master" category where such things would be obvious "flaws". Or in the case of where two models were more-or-less "equal" in depiction, and then you'd have to start "nit-picking".
I also appreciate both "Historical models" ie, "Wittman's" Tiger, but also feel that these can be just plain overdone--and I appreciate seeing something totally fresh. I build most of my builds as "generic" vehicles.
In the case of the dio's you proposed, I would look carefully at the skill and finish of both dios and then base my judgement on that. In my experience, bigger dios are sometmes an excuse for mediocrity; more experienced modelers tend, in my experience, to build more concise, compact dios which pack more punch in a tighter package. Except Manny. Manny LIKE big dios! (just joshin' with ya Manny!--your dio's are SUPERB!!