Actually unless you are using fancy filtering options and scan lines with your video card it almost has to look worse. Now the 3d elements might look better but not the 2d as the sprites are made for a smaller pixel area. (Screen filters are bad, umk)
But it's not anything to argue over. 
"has to?", "might look better?" With all your speculation you might just have an argument. But wait, lets look at some facts...
Do me a favor and load up Project 64. Load up the Diddy Kong Racing or the Hydro Thunder ROM. Configure the graphics plug-in for 1600x1200 resolution, 32 bit color depth, Triple Buffer display mode, Direct 3D HAL.
Oh wait, you do that on a d9200 or any arcade monitor out there.
No need to argue about it. 
Wtf are you talking about man? Console games are meant to be on a tv not an arcade monitor. I have no clue how an arcade monitor can be used as a rebuttal regarding this argument. And actually it's an almost undisputed fact, but I've been accused of wording things to0 harsh.

I guess you can't please anyone around here.
And I have seen the n64 emulators on various displays (pc, arcade monitor, ect) with various resolutions and the only way it looks authentic is on a tv. Gee that's probably because the n64 only outputted to a tv. ;P
For the record I'm very anti emulation when it comes to newer consoles which you can still buy the games, and affordibly at that. (In other words you have no excuse, go buy the real game and quit ripping the company off.) But that's another issue entirely. Kind of like why you would want to run a system that has long playing games that are controlled by an analog stick, standing up, on your arcade machine, instead of sitting down on the couch in front of the boob tube, with a very nice analog n64 controller, like normal.
Oh and further down the thread......
It rarely happens but I completely agree with Xiaou2.

You see the hybrid monitors are superior, but unfortunately that is also the problem. We want to make the display look crappy, else we would all use pc monitors. A tv gives you the most authentic display for your money and it's also the easiest to work with.
It's not as sharp a picture by any means, but it looks so much closer to an arcade monitor, which also isn't a very sharp display. As I said, game designers use the display type to their advantage, and a perfect example fo this is the spyhunter test. It just looks pixelated and junky on a hybrid or pc but it's passable on a arcade monitor or tv.
Some things you just can't emulate, and the display it's outputted on is one of them unfortunately.

Filters help, but if it's the wrong dot pitch and pixel shape then they won't do a whole lot of good. This goes for console games, pc games and arcade games respectively.