Consider, age, minor league and college history, athleticism, speed, arm, hitting, hitting for power, speed on the basepaths, leadership and/or anything else you would like to throw into the mix.
I am strongly in favor of Weeks - his historical BA, Power, Speed and leadership all make him a more valuable player in my estimation. If you are in the Cano camp, I would love to hear your rationale (and don't give me BA, their OBP to date is roughly identical).
2007 - 29 games for Weeks, 28 for Cano (bolded/GREEN indicates better performance)
WEEKS
AB- 115
OBP - .351
HR - 5
SLG - .487
SB - 7
CS - 0
Fielding - .993
Runs - 26
RBI - 13
SO- 22
GiDP - 1
Hits - 29
Doubles - 6
Triples - 3
Team Wins - 21
CANO
AB - 108
OBP - .319
HR - 1
SLG - .352
SB - 1
CS - 2
Fielding - .982
Runs - 14
RBI - 13
SO - 24
GiDP - 3
Hits - 29
Doubles - 6
Triples - 0
Team Wins - 14
I will be happy to update as the year goes on, and will tip my hat if Cano outperforms Weeks in 2007.