This thread inspired me to bust out 2013 for some games, and man, I love it. The iPad performance is much better and the interface is much more intuitive than 2014, but the real money is the decks are just tons more fun.
I enjoy CL more than this year's GoL, we have the alternate win condition of
Felidar Sovereign and a pure "whoooooaaaa life" deck is fun.
BoF is way more fun than FW, hands down. Can basically go creatureless burn!
DP, as the only mill deck, is unique and I enjoy it more than aggro illusions MMz, or weak-control MMz.
PI is actually a fun and dangerous green stompy deck and has enough ramp to make the big stuff playable. HS is a disaster in comparison.
I've gotta say though, DW is a deck I like to play, and so is OD. We'll call that a tie.
The "Planeswalker 5" aside, the colour distribution was much more even, we covered the Ravnica guilds (at least in colours, if we missed pretty much all of their mechanics), only three of which were real duds. The last deck pack had a sweet "boss" deck to finish off the game nicely.
I miss the attack all button a lot, and manual land adjustment, and perhaps this is the rosy filter of nostalgia, but I find the 2013 decks so much more varied, interesting, and challenging to build.
Rant over!