Can you explain what you mean?
Yes. But you need to put in some work.
First, shoot an outdoor scene, green fields, blue sky, maybe some flowers. Shoot in raw mode with the Monochrome Picture Style and the White Balance set to Tungsten - also set Exposure Compensation to +3.
Now import that raw file into LightRoom, or any 'proper' raw processor and start the develop process. Notice how the monochrome picture style is ignored (unless you're using DPP - in which case you'll need to choose another picture style). Notice how easy it is to correct the white balance. Notice how easy it is to recover the lost highlights from the +3eV EC. Those are all the typical behaviours of a proper raw processor.
Now open that same raw file in FastStone. The first thing you notice is that it's monochrome. That's because FastStone, by default, only displays the embedded jpeg, which certainly seems to satisfy a lot of people who believe they are working on the raw image.
To get FastStone to actually access the raw data you need to display the image and press the 'A' key. And wait. And wait a bit more. OK, a lot more... it takes over 20 seconds for my machine to open the image. But it finally does open it, and you can try and fix the white balance. You can try and fix the exposure. But, once you've finished (given up is a more appropriate description) your only option is to save the resulting image as as a jpeg (or tiff, etc). Once you leave the raw file all those changes you made are lost forever.
Nobody in their right mind would ever try to use FastStone as a raw processor more than once. It's great at loads of other things (otherwise I wouldn't have paid for a license) but, as a raw processor it sucks.