The other answers by mbauwens and joseem address the specific song you asked about and joseem did an excellent job explaining the different reasons we often see different "translations" of a given song by different folks.
But I want to address the edited (by Matthew Read) title to provide useful information for folks who come across the title in a search and ultimately want to know how to choose from multiple translations for any given song (other than the one cited in your question).
We know that many songs will be interpreted, transcribed or translated using different ideas on which chords to use where.
Piano based songs (written and performed with piano as the dominant instrument) are the most difficult to translate to guitar because the chord voicings that come easy on piano are often very difficult to translate to a playable chord on guitar.
Here is what I do if I want to learn a new song that is not one I can just listen to the record and hear the obvious chords.
If my search turns up multiple different interpretations, I try a few on my guitar and eliminate those that just don't sound good at all. I am trying to narrow down the possibilities to the various interpretations/translations that sound somewhat authentic - at least in certain places. For example I might like the way one idea sounds good on the verses but might feel another translators version of the chorus chords sound better.
In many cases, none of them will be perfect - so I compare them side by side and come up with my own personal interpretation or translation of the chord progression and write it out on my own lead sheet.
Let me step back a moment and talk about transposing to different keys. In the beginning when I am trying to find the best version, I like to take the key out of the equation entirely because once I arrive at the best interpretation of the chord progression, I can always transpose or use a capo to get to the key I want to use!
In other words I want to know if the best sounding version of the verse chord progression is (for example) I Major - iii minor - IV Major or if it sounds better using a V Major instead of a iii minor (that type info). Once I know which chord types and scale degrees sound best, I can transpose my chord sheet to whatever key I can more easily play or sing in.
After choosing several versions that have elements that sound kind of right, I will save those in a folder on my computer. Then I go to a lyric site and copy and paste the lyrics of the song into a word document and format it so that I have room to write the chords above the lyrics.
Then I will take the song section by section starting with the verses, then the chorus and then the bridge. I know that one of my selected versions may work better on the chorus while another may work better on the verses.
When trying to determine which version sounds best - I play each section while listening to a recording of the song (perhaps using a capo to make the key the same as the recording). Usually every interpretation will start off with the same chord (often a I Major) and may all agree to a point.
As I try out each version, I am writing the chords I think work best on my lyric sheet above the word that falls on the chord change. When I get to the point where two versions disagree, I want to try each version side by side on my guitar - to see which one sounds best. When I decide, I write that chord on my lyric sheet.
As I go through this process, I usually discover after trying each different chord idea in the different places, that some parts of some versions sound great while other parts of a different version sound better. So I take what works best from each version and write it on my new version.
Once I have determined through trial and error what chords sound best to me based on how I plan to sing the song, and have those chords written above the lyrics I pasted on my word document, I try those chord types in different keys with different chord sets and capo positions to find the chord set and capo position that makes the song easiest to sing and play for me.
For more about using a capo to make it easier to play certain songs on guitar or for transposing songs to a different key using a capo (including a handy capo/key conversion chart) click here
I type out my final version and save it as a word document and print out the lead sheet for my notebook. It's a process that takes more time than just choosing the "best" version out of many (that may all be less than perfect), but analyzing the chord progression in this way helps me learn the song on a much deeper level (and helps me as a songwriter as well).
Have fun as you expand your repertoire on guitar!