Rhino 7 Cycle vs Legacy rendering

I am learning the rendering from Level 1 training. The result of Legacy and Cycle render is very different, I think the materials is not yet optimize for Cycle yet, am I right?

Gazebo render.3dm (10.5 MB)

Cycle

Legacy

I would start here to learn rendering: https://www.rhino3d.com/tutorials/#rendering

There are newer videos that show the new engine.

This is an old file that has Lands Design Materials. I just reassigned a few materials and used Lands Design to insert the vegetation:

Could you share the file for reference?

Here it is. I used the most recent Lands Design to re-insert the plants.
Gazebo_render_sd.zip (8.1 MB)