I think A is the resized one...the other 2 have very distinct focal points that are very clean.

looked in firefox 100% on a chocolatety 1280x800 laptop monitor :(

A contains very visible aliasing in some locations and lacks small intricate details present in some parts of B and C.  Aliasing and details loss are both pretty "standard" results of such an operation, so I would bet my money A is the fake.

[23:32] <zinga> http://endlessparadigm.com/forum/showthr...?tid=20694 posted, good luk
[23:34] <Senseito7> correct me if I'm wrong, those 3 images are 1080s, and 720s upscaled, right?
[23:34] <Myth0s> try to learn german then :D
[23:34] <Senseito7> why have different images?
[23:35] <Senseito7> just to mess us about?
[23:35] <zinga> 3 1080p images, but one of them is a 720p upscale to 1080p
[23:35] <gsmoke> whoa German is one of the languages i barely know a word
[23:35] <zinga> so u can't overlay the images to compare
[23:35] <zinga> since u generally wouldn't do that anyway
[23:35] <zinga> eg, if u have a 1080p source
[23:35] <zinga> ur not going to downscale it to 720p
[23:35] <zinga> (unless it's a monitor thing)
[23:36] <gsmoke> i think the B is the one
[23:36] <Senseito7> only one image looks like 1080
[23:36] <zinga> then post
[23:36] <zinga> 2 are 1080
[23:36] <Senseito7> ya but only 1 looks like 1080
[23:36] <Senseito7> xD
[23:36] <zinga> lol
[23:36] <Senseito7> ive seen much better 1080
[23:37] <Senseito7> the animation quality doesn't seem superb
[23:37] <Senseito7> and one is of a motion interval so
01[23:37] <Assassinator> images too big, my internet too spoon
[23:37] <zinga> got it from here
[23:37] <zinga> http://www.bigbuckbunny.org/index.php/trailer-page/
[23:37] <Senseito7> aaaaaaah big buck bunny
[23:37] <Senseito7> fair enough
[23:37] <Senseito7> v.v
[23:37] <zinga> lol
[23:37] <Senseito7> in A) the leaves are stupidly oversharp
[23:38] <zinga> B/C?
[23:38] <Senseito7> and distance leaves are lacking a bit of depthj
[23:38] <Senseito7> the grey dude in B looks like he's lossless
[23:39] <zinga> goes to show usual artifcats in encoding can play a role too :P
[23:39] <Senseito7> vague blocks on the right and lack of background detail indicate relative compression
[23:39] <Senseito7> but not many would notice or bother to mention
[23:39] <Senseito7> that
[23:40] <Senseito7> and with C, its a motion interval so that may bother anyone who thought he should be appearing blur-less
[23:40] <zinga> so u think B is the 1080 one?
[23:40] <zinga> interesting
[23:40] <zinga> gsmoke thought otherwise
[23:40] <zinga> hehehe
[23:41] <Senseito7> butterfly detail is superb with C
[23:41] <Myth0s> a is the 1080p
[23:41] <Senseito7> and that squirrel is greatly detailed
[23:41] <Senseito7> so
[23:41] <zinga> there's two 1080p's
[23:41] <Senseito7> C is my choice for 1080
[23:41] <Myth0s> a is one of them
[23:41] <zinga> lol
[23:41] <zinga> actually shouldn't be discussin  them here
[23:41] <zinga> o well
[23:41] <zinga> can't stop u
[23:41] <Myth0s> a and c
[23:41] <Senseito7> can't decide A or B
[23:41] <zinga> anyway going to bed
[23:41] <zinga> cya
02[23:42] * zinga (zinga@3D0C0ADA.4516643D.7D0D4FED.IP) Quit (Quit:  HydraIRC » http://www.hydrairc.com « Po-ta-to, boil em, mash em, stick em in a stew.)
[23:42] <Myth0s> meh bye
[23:42] <Myth0s> :D
[23:42] <Senseito7> they look as bad as each other
01[23:42] <Assassinator> dammit. reading all this stuff really makes me want to look at the images, but my internet just not working right now...
[23:42] <Senseito7> :/
01[23:42] <Assassinator> :(
[23:42] <gsmoke> zing bye
[23:42] <Senseito7> I HATE the As extreme sharpened leaves
[23:42] <Senseito7> which tells me what it could be oversharpening due to the upscaling filter
[23:43] <Senseito7> only thing that bothers me about B
[23:43] <Senseito7> is that the middle dude is a little out of picture
[23:43] <Senseito7> otherwise the rest seems 1080
[23:44] <Senseito7> so B and C
[23:44] <Senseito7> because A looks so fudgeed up
[23:44] <Myth0s> i say A and C
01[23:45] <Assassinator> dammit, internet is so fudgeed up right now... downloading these images at like 1kbps
[23:45] <Myth0s> lol
[23:46] <Senseito7> oh
[23:46] <Senseito7> epic
[23:46] <Senseito7> hahaha

I say A because you can see the separate hairs clearly on the squirrel in B and C but the grass in A lacks that much detail. Also to me the Grass in B looks better than the grass in A.
Still could be just me trying to find faults where is is none just because I expect them :S