Careful, the review you refer to is for the Acer HMD and it has only 90 degree FOV. The Samsung, Lenovo and Dell HMDs have 110 degree, which is identical to rift and vive. The increase in resolution with the Samsung Odyssey is quite substantial.
Rift/Vive: 1080x1200 = 1,296,000 pixels per eye
Samsung Odyssey: 1440x1600 = 2,304,000 pixels per eye
80% improved resolution and similar FOV, which means better clarity for text and textures etc. This is definitely a jump to the next level over Rift or Vive as far as resolution and screens are concerned.
Endgadget tested it and had this to say.
"The HMD Odyssey is equipped with dual 3.5-inch AMOLED displays, each of which have a 1,440 x 1,600 resolution with a refresh rate of 90 to 60 hertz. The result is a brilliantly sharp and crisp virtual environment -- when I took a brief Holotour of Machu Picchu, I genuinely felt like I was there, floating above the mountains on a hot air balloon. Color reproduction is fantastic, and there was none of the screendoor effect that so often plagues VR headsets of lesser quality. The 110-degree field of view also contributes to the feeling of immersion, which is especially apparent when viewing 360-degree videos and photos."
https://www.engadget.com/2017/10/03/samsung-hmd-odyssey-hands-on/
Obviously we need to wait for reviews but it is a step up in VR as far as IQ goes.