^ I think Nukemaster has it right. You are thinking of the Hyper 212+ and the Hyper 212 Evo. They are different coolers. The Evo is the better of the two. There should not be any difference between one sold in Europe and one sold in the US.
I suppose there could be some sort of slight difference in the metals used due to local regulations but I really doubt it.
The US version you linked to has mounting hardware for LGA 2011. The US version also has a different fan. Notice the RPM and CFM ratings are different. The US version listed will cool a little better though with the faster fan. It will also be louder.
Hmmm actually looks like the Spanish version weighs more. So it's really hard to say which would cool better. I think they are just different revisions. I would bet you could find them both in the US or in Spain if you looked hard enough. I think the main difference is the LGA 2011 compatibility.