Tech website Wearable has done an article analyzing and comparing the Google Daydream and the Samsung Gear in terms of display. It of course matters which phone you are using and they do tell which is best for each. They go into the specs of each and ultimately the Samsung Gear has the better quality screen.
To find out more as to why that is just click the link below to check it out!
https://www.wareable.com/vr/samsung-gear-vr-v-google-daydream-view-555