Reasons why I like the (old) winners' poem and why Martyn as "mars" is the superior version. Over explained and pure info dump because I'm insane and I wanna talk about it before Secret Life is over :]
"The sun, the stars, the moon and mars"
First of, pure melody. "Sun" and "stars" both start with an s, and both "moon" and "mars" starts with an m. But also, but "sun" and "moon" ends with an n, and "stars" and "mars" even properly rhymes (both ending with "ars").
But also the fact that the words go together (besides all being celestial bodies. Which is also a nice touch, but not the point I'm necessarily trying to make here). The sun and the stars are all stars, and the moon and mars are both satellites.
Then, of course, the meaning. The symbolism. The name Grian literally means "sun" in Irish. Scott has a lot of star motifs going on. Pearlescentmoon. All very straight forward.
Mars? The fourth planet from the sun, the fourth winner. Mars is also the roman god of war, which goes along well with the way Martyn won the game. Although Mars is usually seen as less destructive for the sake of it than his greek counterpart Ares (and rather as a defender and protector), he is still in some versions described as savage or animalisticly feral. The whole "red planet" ordeal could also have been applicable, had it not been applicable to practically every winner. And, of course, the name Martyn literally translates to "dedicated to mars".
There's probably some kind of watcher reference or something to be made there, but I'll leave it at that.