Bro sometimes in videos it won't be easy to compare video because audio quality changes when medium is change or it varies from place to place. Lots of brands providing dolby Atmos in smartphones and I think it is the big factor when it comes to buy a phone !
Thank you for reaching out to the Samsung community! We would like to inform you that the audio performance can be better compare when listen it physically. If you face any issue in Dolby Atmos sound performance we would suggest you to visit nearby Samsung Service Center in order to get your device physically inspected by the service engineer. Please find service centre details in the link provided -http://www.samsung.com/in/support/servicelocation
Be sure to hit ♡ when you find an answer that works for you. For further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/