Texas as a team was much worse on the road in that time frame, not just Kinsler.
I think you also have to look at park factors as a good reason why.
2010 Texas' division foes, in park factors, ranked:
2. Sea
3. LAA
11. Oak
2011
4. LAA
5. Sea
11. Oak
2012
1. Seattle
4. LAA
9. Oak
2013
5. Oak
12. LAA
16. Sea
22. Hou
With the exception of Houston last year(1.074), they've had only "pitcher friendly" parks in their division. That's a good chunk of their road games. I really don't think it's fair to just throw out "away stats" on their own. Where they play their away games has a big influence on the outcomes.
You do realize Comerica's "park factor" makes it a Hitter's park in the AL during 2011-2013?
I consider it a flaw to designate Comerica as a hitter's park. It is more park neutral.
Maybe the AL West just has weak hitting and great pitching teams that skew their park factor.
Numerical range for parks last 15 years (100 = neutral).
TEX 111 - 101 (difference of 10 point swing, 106 median)
BOS 107 - 101 (difference of 6 point swing, 104 median)
NYY 106 - 101 (difference of 5 point swing, 103.5 median)
CHW 106 - 101 (difference of 5 point swing, 103.5 median)
KCR 110 - 97 (difference of 13 point swing, 103.5 median)
HOU 107 - 97 (difference of 10 point swing, 102 median)
TOR 104 - 97 (difference of 7 point swing. 101.5 median)
DET 106 - 94 (difference of 12 point swing, 100 median)
MIN 100 - 98 (difference of 2 point swing, 99 median)
BAL 103 - 95 (difference of 8 point swing, 99 median)
CLE 101 - 94 (difference of 7 point swing, 97.5 median)
LAA 102 - 92 (difference of 10 point swing, 97 median)
TBR 101 - 93 (difference of 8 point swing, 97 median)
OAK 100 - 94 (difference of 6 point swing, 97 median)
SEA 97 - 90 (difference of 7 point swing, 93.5 median)
Last 5 years hitting Away versus Home
1. TEX .727 OPS vs .809 OPS (.082 difference)
2. BOS .752 OPS vs .822 OPS (.070 difference)
3. BAL .697 OPS vs .764 OPS (.067 difference)
4. DET .730 OPS vs .795 OPS (.065 difference)
5. NYY .750 OPS vs .807 OPS (.057 difference)
6. CHW .699 OPS vs .749 OPS (.050 difference)
7. TOR .721 OPS vs .765 OPS (.044 difference)
8. MIN .705 OPS vs .740 OPS (.035 difference)
9. KCR .704 OPS vs .740 OPS (.036 difference)
10. OAK .712 OPS vs .715 OPS (.003 difference)
11. TBR .740 OPS vs .736 OPS (- .004 difference)
12. CLE .726 OPS vs .719 OPS (- .007 difference)
13. LAA .749 OPS vs .737 OPS (- .012 difference)
14. HOU .680 OPS vs .668 OPS (- .012 difference)
15. SEA .685 OPS vs .656 OPS (- .029 difference)
In premise, I agree that Away stats can be influenced by divisional play. However it does a better job in mitigating park factor than just looking at totals. How do you reconcile someone who plays in Coors or Arlington?