This doesn't really tell the full story. It's not 1080p, but it's not not 1080p either. At least that's my understanding. You can't really say what the resolution is when it's rendered like this. And I've gotta hand it to guerrilla, they did a really good job with this hat trick.

This isn't meant as an attack? Hmm, meh. You know why it won't end?

http://www.dualshockers.com/2014/02/14/titanfall-beta-xbox-one-vs-pc-max-settings-direct-feed-screenshot-comparison-pc-wins-but-not-by-much/

Look at those screens, look at that aliasing, those "textures" that simple geometry (that statue is a shame, we're in 2014...) and then look at some screen from a direct feed of Killzone. And I'm sure you'll understand that the PS4 would run Titanfall in fullHD without any issue. You're comparing a game (TF) that uses an old gen engine, with seriously unimpressive graphics vs probably the best looking game made this gen so far (nope, don't bring Ryse in there, since we know the cutscenes weren't in realtime it's pretty much pointless, and it's not an FPS anyway).

And I'm not hating on Titanfall, I'm buying it day 1 on PC, but don't think that just because the pixel count is smaller that something relevant can be taken out of it, the 2 games are a generation apart. We could run PS2/Xbox/GC games in 4K, does that mean TF and KSF perform like shit compared to them? Nope

No matter how you try to spin it ,, the game still renders less then titanfall beta and thats a fact. You can't win them all ,, just be happy us gamers get good games to enjoy on our next gen consoles

Maybe, to keep costs (and heat, as APUs contain the two most power-hungry ICs, CPU and GPU, in a single chip) under control they chose GPUs that are barely capable of 1080p@60Hz in optimal conditions. These optimal conditions surely include being fed with a steady stream of data, and in multiplayer most probably this condition isn't met.
But all this could account for a GPU performance drop not as big as 50%, a drop so steep made me think, even before checking, that it uses p2p, not dedicated servers, distributed computing for MP, with the consoles themselves being the computing nodes. I checked, and it looks like KZ SF uses p2p for computing and dedicated servers just as hubs, gateways:
http://videogamesandnews.com/ps4-players-upset-dedicated-servers-killzone-shadow-fall/
For more links:
https://www.google.it/search?client=ubuntu&channel=fs&q=killzone+multiplayer+servers+p2p&ie=utf-8&oe=utf-8&gfe_rd=ctrl&ei=HQ0VU8q-LaHe8gfe6YCgCg&gws_rd=cr
This explains all: 8th gen consoles APUs actually are mid range, but if in SP they are capable of 1080p @whatever between 30 and 60Hz, and in MP suddenly they cannot anymore, and by an excessive amount, it cannot be GPU's fault.

I haven't tried multiplayer yet, but any HDTV broadcast I get here is 1080i. So I guess that's sub HD now...
Actually Dr Who series on blu-ray is in 1080i. Looks great and is a step up from 1080p24, since the tv de-interlaces it.

At least it matches native display resolution without any softness from upscaling, but at the cost of unwanted motion blur with fast movement. Essentially it's 1080p30, but split up to make 1080i60.
I guess they can't use an actual 1080i signal since frame rate drops would stand out more, and de-interlacing will add lag defeating the whole purpose. (rendering 1920x540 instead of 960x1080 shouldn't make any difference) GT4 did that trick on ps2, 640x540 into a 1080i60 signal, but that was before de-interlacing became standard.

In terms of computational difficulty it goes like this
720p60
I guess locked 1920x1080 60 fps multiplayer will stay exclusive to sim racers. At least hitting native display res and over 30fps is a step up from last gens sub 720p with screen tearing.

Basically they are only refreshing half the pixels on any horizontal line... okay, now it makes more sense to me...

No matter how you try to spin it, Titanfall is a cross gen game with old gen engine with 12 players and cant even renders 1080p .

It suck even though they gimped it they cannot reach full hd.

I grew up playing frikin GoldenEye.

Last thing I could care about with shooters is shid like this.