>>386
What does Journey into Nyx and Born of the Gods have that Theros hasn't?
The key here is to think like a person from the future:
"If you could draft just "one" set from the block (you're limited by your money perhaps), which one would you choose and why?"
From a casual perspective it would be Theros, because it focuses the most on the keywords one associates with the block in Heroic, Devotion and Monstrosity.
From a spikey perspective Theros has the cards you associate with this standard-era. I'm thinking of Stormbreath, Fleecemane, Elspeth, Xenagos, Polukranos, Thassa, Downfall, heroic, Anger, Whip, Merchant…
From a greedy perspective, Theros has the better money-cards in Ashiok, Thoughtseize, Nykthos, Master of Waves (perhaps Journey with Keranos/Eidolon/Mana Confluence will challenge that in the future).
But that is just how I see it and I'm not even sure if the set is any good investing in. It took years, almost 10+, before you could get double/triple the money back for Champions of Kamigawa boxes. And in between Wizards produced a multitude of better investments (Future Sight, Zendikar, Innistrad, New Phyrexia, RoE, Worldwake, FtV, Commander). With Champions, Wizards printed a flavourful piece, and it took a while before people absorbed it's aroma and got nostalgic about all the japanesic culture. And I feel Theros will have similar destiny, specially since the draft nailed the flavour.