Again a complex diorama layout is put up against a simple, excellent painted small unit. How about matching similar formats?

1. Pairings are decided automatically based on positions in the league.
2. The format of these two pictures is the same, surely? A small bunch of painted miniatures photographed in front of a terrain / scenic backdrop. In one case it's grassland with a scenery backdrop of rocky outcrops and trees. In the other it's sand, with a scenery backdrop of a (very old) resin building plus a few bits and pieces of set dressing. Not exactly a complex diorama. And in terms of the format, not materially different.
3. The format of submitted entries isn't down to the organiser, it down to the participants. Beyond five painted miniatures (and barring digital manipulation), entrants can dress up their entries as far as they want. That's the deal. The LPL is about encouraging people to paint figures and produce the most attractive and appealing pictures they can using those figures. Some people go the scenic route, some people don't. It's been that way for 8 years, and it's not going to change. Sorry if that's not the competition you're looking for, but everyone that takes part and reads the rules understands that's the deal. They make their choices about how they present their entries accordingly.