As Kelly mentions, Springer hit well in 2012, his first real season in the system (as he only got 33 PAs in 2011). For Lancaster in 2012, Springer posted a .955 OPS in 106 games, and a less-than-stellar .630 OPS after his 22-game stint in Corpus.
But dadgum, those strikeouts. He struck out 156 times in 581 PAs in 2012 - 26.9% of his PAs. Twenty-five of those strikeouts came in the 81 PAs in Corpus - 30.9%.
Luhnow knows this, too, since he presumably can read Baseball-Reference just as easily as I can. And he has, you know, seen him play, and gets reports and stuff from people who saw him play that very night. He said on Saturday:
"We know what type of player (Springer) is...he's a speed, power, strikeout guy. Great work ethic, great athleticism. I think he knows the issue on the strikeouts."
So that's why Luhnow tabs him more for 2014 than 2013. And keep in mind, the guy only has 614 professional PAs.