To my eye, the LGB F7 does a good job of looking ridiculous all by itself alone. As @TM Terry noted above, the scale of the car body is probably 1:24. Since it sits atop trucks gauged for 1:32nd scale, it has a decidedly ungainly narrow gauge look to it. Depending on your point of view, the variety of scales all running on 45mm track is either the drawback or the glory of G gauge.
As for the two Hudsons, I'll stick with my story. Both of them are equipped with the appropriate 6 axle tenders and based on prototypes that each were 41 feet or so long. The NYC didn't have "long haul tenders" per se until the wartime appearance of the PT series bed tenders with which many Hudsons were eventually equipped. These indeed were substantially longer than the original tenders.
As a matter of interest, in its regular line Aster offered several different sub-classes of Hudsons including the J1e and, I believe, a Michigan Central J1c equipped with a 4 axle tender that measured only 34 feet in length. That said, these were 1:32nd scale (Gauge 1) models. As far as I know, only the J3a was produced for the LGB/Aster G gauge partnership.
- Mike