Hmm.. I think it's worth more than 7. You'll find most people bought this game for the mods and multiplayer. The single player campaign was more like an extended showcase of this engine.
There's so much more to Arma3 than your average linear run and gun shit that's out there now.
4K works amazingly cool at the cinema if you can ever find a special event that would host it. I saw the 4K transfer of Blade Runner a couple of years ago and couldn't believe what I was seeing. It was unbelievable on every level.
I checked out a 4K 60inch television at Harvey Norman the other day and it was ok. The 55 inch 1080P nearby still looked awesome anyway. As for the price difference - well, you can only imagine the joke.
I asked the guy if he could plug in a PS3 on the 4K just to see the upscaling and he told me that it wasn't worth it.
AceBalls' comments