Apotelyt posted a comparison between the Canon EOS R and the new Panasonic Lumix DC-S1.

They sum up the strengths of each camera.

Review summary: Canon EOS R vs Panasonic Lumix DC-S1

So what conclusions can be drawn? Which of the two cameras – the Canon R or the Panasonic S1 – has the upper hand? Below is a summary of the relative strengths of each of the two contestants. 

Arguments in favor of the Canon EOS R: 

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images. 
• Better video autofocus: Features on-sensor phase-detection for more confident movie autofocus. 
• Larger screen: Has a bigger rear LCD (3.2″ vs 3.0″) for image review and settings control.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• More compact: Is smaller (139x98mm vs 149x110mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 238g or 27 percent) and hence easier to carry around.
• Easier travel charging: Can be conveniently charged via its USB port.
• Faster data transfer: Supports a more advanced USB protocol (3.1 vs 3.0).
• More affordable: Was introduced into a lower priced segment (23 percent cheaper at launch).
• More heavily discounted: Has been on the market for longer (launched in September 2018).

Reasons to prefer the Panasonic Lumix DC-S1: 

• More detail: Has more megapixels (47.3 vs 30.1MP), which boosts linear resolution by 25%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor’s full resolution potential. 
• High quality composites: Can combine several shots after pixel-shifting its sensor. 
• Better video: Provides higher movie framerates (4K/60p versus 4K/30p). 
• Better sound control: Has a headphone port that enables audio monitoring while recording.
• More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 3690k dots).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• Faster burst: Shoots at higher frequency (9 vs 8 flaps/sec) to capture the decisive moment.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More modern: Was introduced somewhat (4 months) more recently.

[via Apotelyt]