InnocemtbyInnocemtby,
While the Acer monitor you mentioned is a decent monitor it is not the same caliber monitor that this LG is.
There are many great reviews out there that rate this monitor extremely well. Reading many of them I found the review on Tom's Hardware very detailed about this specific model and putting it up against some tough competition. Check it out for yourself at the link below.
http://www.tomshardware.com/reviews/lg-24gm77-gaming-monitor,4082-8.html#sthash.JMlrULdD
If you compare this test/review up against what reviews you can find of the Acer you mentioned you can for sure see a clear difference.
https://www.amazon.com/gp/product/B01DHTWWTM/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1