You could try scaling Vicky down to about 1%? ;)

Really though, the Greebles and, I think, most of the free Dystopia City Blocks indeed too, are pretty lo poly and, I guess, designed more for background / distant placement in a scene.

I used the freebie Dystopia blocks, for example, in the linked image, below, to make an envsphere panorama in Vue... (will share that panorama actually - was going to make a few more like it too).

I think if you want something, from the marketplace, that is scaled to actual Poser figures, you need to consider, for example, Stonemason's Urban Future sets, or 3-D-C's Sci Fi City sets... that sort of thing perhaps?