At the risk of overstating the obvious, you should take that description as a marketing term, rather than a specification. Gaming requires faster, higher resolution graphics to look good in panoramic sweeps of alien planets so if it's "good for gaming" all they're saying is you'll find it more pleasurable for gaming. Other uses may not take advantage of those features to the same degree, sort of like using an 18-wheeler to move a barrel of olive oil. You can do it, but a half-ton pickup could also do the job at a lower cost.
The curvature will affect visibility for folks looking over your shoulder but if you are in front (and center) of the screen, that curvature won't affect what YOU see. The other thing about gaming monitors has to do with how fast they paint an image and what resolution they can reach. You should be aware that ultra-high-resolution screens, depending on which version of Access you have, may result in shrinking the viewing size of the DB windows. Old versions of Access might not have compensated for really high-res screens. Newer versions? Can't say - 'cause I've got an older version.