Long post so I'll split the two:
I'll throw my hat into this ring . . . regurgitating the arguments I've heard in the past and my personal ones.
Haesslich - I don't think the WC3 novel says anything about how big the H'var Kann is . .. I could be wrong, but I'm not even sure its called a dreadnaught there. IIRC, it only refers to it as Thrakath's new flagship and carrier. More about this later. (build the suspense shall we?
).
FC tells us in two places that the DN is huge. One, where Banfield tells us its 22 kilometers long (IIRC, its a typo mistake that has made it to print, ergo, canon - see the bible reference). Two, where Bear compares the DN to the Behemoth, basically commenting the DN dwarfed the Behemoth, which we all see from ingame footage is pretty damn big.
1- the DN doesn't look 22km in game.
Can be explained away as game engine limitations.
2- the DN isn't armed (15 lasers and maybe a half dozen AMG's) like its 22km long.
Again, game limitations.
3- The DN has way too little mass (compared to other WC capital ships) to be 22km long.
This one I've always thought was a good point, but its been thrown about so much I'm tired of hearing about it. The other side of the argument seems to be that the DN is mostly empty space. I still think the thing would have to be made out of paper to be 22km long, though
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4- the ending cutscene with Blair being tractored into the forward bay of the DN, compare the hanger opening size to Blair/Kilrathi inside.
I rather like this one, though it can be argued its a forced perspective type situation.
5- the ending cutscenes where the Vic plows into the DN, the DN doesn't seem that big.
You can argue that the designers would want some agreement between the in-game and video model.
Now, my personal sticking points:
6- In False Colors, the DN is a almost the same size as a backwater system space station (Ukar dai Ragark even says he was assigned to a very unimportant base in the Landreich - Banfield makes the comment that the figures are nearly twice what they should have been for the facility). K'tithra Mang from WC2 is on the order of 5km and a major command base to the Kilrathi. This means we are to assume that a backwater base is about 22km while a major command is 5km.
The argument can be made that Ragarks base is newer than K'tithra Mang (Mang being around in '54) or is a personal fiefdom that Ragark has expanded on using his own resources, or is an asteroid base, etc etc.
7- My personal favorite - In Fleet Action (maybe a year before WC3), the Hakaga carriers construction almost knocked the Kilrathi out of the war. The resources required to build 6 (I think its six, it may have been 8) of these carriers stretched the Kilrathi war machine to its limits at 1.8km (Twice as long as any Kat carrier in service, assuming the Bhantkara - largest carrier I know about- is in service). So we are to believe that directly after building these monsters, the Kilrathi turned around and built at least two (I can't remember how many are in the bad ending cutscene) 22km long ships when 8 Hakaga carriers that were at the most 1.8km long apeice almost ruined them?
No real 'devils advocate' I can think of here.
Overall - This is an old one, but I tend to agree to it. I think the H'Var Kann was intended to be a Hakaga carrier (and the ships on the cover of Fleet Action could be explained as an artists representation of ralari destroyers sent to radiate a world). I don't know how parallel the development of WC3 and Fleet Action were, but most of the evidence stacks up.
As in #7 above, the Kilrathi were too strapped to build a whole new warship. The Emporer was severly pissed that Thrakath had lost half his new fleet in the BoT (WC3N). I'm not sure I'd be to mad if a couple of new 22km long DN's were coming online. The Emporer even commented that the Empire was in dire straights to replace the losses (something like 5 years), not an issue if a few supposedly brand new huge carriers/DN's coming online. The H'Var Kann is only introduced as Thrakaths newest flagship in the WC3N, which just as easily could have been the newest Hakaga to come online that missed the BoT (Fleet Action).
Also, when Blairs strike force from the Vic began to engage it in WC3N, there is no mention of how ungodly large the thing is by anyone as there was in FC . .. even though this is supposed to be the first time its ever seen. If it was a Hakaga, it would have been old hat. In addition, the H'Var Kann is actually threatened by the small strike force (per Meleks comments).
Anyway, its all mental masterbation. THe Hakaga is way too short to be the DN from FC and the DN from FC is the DN from WC3 etc etc etc. *raises glass* Here's to typos making a whole new canon class.
C-ya