Samsung is trying to promote its own Android application
publishing service .

You can compare the functionality of the service with
Google Play .
On the main profile page you can see general download statistics and user comments / questions.
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The main differences from Google Play:
- Mandatory verification of applications before publication. Verification takes about a week, in case of problems, the certification team creates a report describing the failure and adds a video that reproduces the problem.
- the requirement to make separate startup modules for different groups of devices (apparently they think that it is too difficult to make an application working normally on different screens).
In the general list, you can see the verification stage of each application:

Download statistics by country

Statistics for a single application for a single device group:

User comments with ratings:

User Questions:

Example response to user:

This is what the consumer application looks like:

In the upper left corner you can see the selected device. There is no single page for all devices, as a result, even giving someone a link is already a problem.
For example this page
http://www.samsungapps.com/topApps/topAppsDetail.as?productId=G00007696428&listYN=Yallows you to download the application on the Galaxy S but not on the Galaxy S3. It is very uncomfortable.
Total
Samsung Apps provides more complete and detailed statistics and allows you to test the application without even having a specific model.
Judging by the statistics, applications are downloaded more than on Google Play (for the application from this article, downloads are 7-8 times more). Moreover, the most active regions are Brazil, India, etc.
You can answer questions from users. This feature has recently appeared on Google Play and is not for everyone.
The terrible usability of the site spoils the impression a bit. It is difficult to make out what and how to do even if there is a FAQ and a detailed description.
UPD
judging by the newsletter from Samsung, there have been some minor changes in the store:
- The optimized devices for the application are recommend, and the multiple devices from the recommended list can be registered at a time. . Compatible OS : bada, Android . Criteria for device recommendation : Resolution, API Level, and other conditions for additional device classification - Revised so that the item group ID, that is already in use for a specific application, can be used for other applications. - An option has been added so that re-uploading the binary file is not required when select Add Device.