When did you try it, as it changed from Here to OSM maps? Being OSM based means that the maps update very regularly, and if you correct something that’s wrong on the OSM public editor it’s usually incorporated into Scenic maps within a few weeks.
One of the great features is that you can customise almost every single element of the display.
You can change the colour, font, size etc of the different classes of roads. In terms of POIs, they’re broken down into lots of categories, and each category can be customised for colour, font, icon, which zoom level they’re displayed at etc. This makes Scenic way easier to view when navigating, unlike the contrast-less colour schemes that MRA has.
Notice that I said can - you don’t have to!
It’s definitely odd that ChatGPT says Scenic is the better planner. I’d say MRA wins for me mainly on 2 points; you can customise layover times and see a running duration+mileage, and it has the various overlays when searching for specific things like fuel/food etc.
I’m looking forward to the new Scenic web planner, although I don’t have an issue running Scenic on my iPhone, iPad or MacBook.
Don’t want this to be seen as me pushing Scenic as I have no agenda, it’s just a product that I love, so I’ll let us get back on topic.