That is true, it's an order of magnitude of difference. For example, look at this location:

https://en.mapy.cz/turisticka?x=13.8929744&y=50.0331743&z=14...

And compare it to Google Maps:

https://www.google.com/maps/@50.0297578,13.8901237,13.85z

Google Maps is substantially better at search and places data but this advantage is slowly shrinking.

Also, Mapy.cz has a tracker feature with online sync and gpx export.