I honestly don't even know why PC monitors even use the 720p, or 1080p branding other than trying to get sales using HD buzz words. PC monitors have had greater than HD resolutions even before they went wide screen. IMO, buying a 1080p monitor is almost a downgrade. Nowadays especially when you can buy monitors with 2560x1600 monitors or 2048x1152.
Either way, I am glad you are happy with your 1920x1080 res monitor.