Wow, nice question. Two former college QBs turned WR based on athletic ability playing for bay area teams.
Battle has the better team (questionably), but Curry is more decorated. Battle is injury prone, but Curry is a major injury magnet. Both are big and physical with good instincts and hands (Curry has better hands).
I'll take Curry b/c his injuries are freak, while Battle's are more routine, and b/c Curry is an ELITE player sans the achilles, while Battle is a good player sans the injuries.
Go for the upside, dude.
And, btw, nice stealth ACF post. I like answering this type vs. the blatant WDIS.