Pretty much. There are a few other things to take into consideration, like the panel technology (IPS, etc).
Smaller pitch is preferable the closer you are too it. A standard 24" 1920*1080 monitor will have a pitch of less than 0.3mm and looks good up close, a 40" 1920*1080 TV however would have a dot pitch would be about 0.5mm.
If you're going to be close to the monitor, say 2 foot, the 24" is going to be sharper. That's why and old school stadium jumbo-tron can just use LEDs for it's image, because you can't see from 100ft that each pixel is 6mm away from the next!
I'm not going to tell you to go one way of the other. But, I will say unless you want to step back from it and watch films like you would a normal TV once in a while, I would stick with the LG 34" Ultrawide. It's a lovely monitor, I use one at work.