The GH5 adds a lot of artificial sharpening to it's image that can't be turned off in the picture profile menu settings. Sharpness is not the same as resolution and again the GH5 is not a 4k camera in resolution terms.Here is a direct comparison of GH5 2K & 4K raw All-I footage to Alexa Classic ProRes (2k Olpf gold standard), with cameras moved to compensate for crop factor:
RAW
Stills Only
The GH5 2K is significantly sharper, here are updated DaVinci Resolve single-node settings to simulate the Alexa OLPF:
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