Ok, so I set origin to download titanfall over today, I fully expected it to be like, 10% or 20% done by the time I got home since my internet is about 5.8mb/s (the highest download speed I get is 500 - 600kb, rarely 700kb), I was suprised to see that it was done.
How can origin download a 56GB game in just over 12 hours on a 5.8mb/s internet connection?

They lied to you.
 
They know that games with higher filesizes indicate to gamers that the game has "more quality present", so they sold you an 8gb game and just TOLD you that it was 56gb. The installer just throws randomized bits into your HD so that when you have finished installing it still takes up 56gb.
 
And folks are just eating it up, those fools.

I see, I see 
 
Still, doesn't mean much when I have 1.97 TB free on my main storage drive.

sounds like you could sue - could probably get your money back for the game

I didn't pay for it, it was that game time thing.