False.
This is where your problem lies.
You think splits only refer to the very basic statistical numbers. If you go to a site as simple as baseball-reference.com and click on '2008 Season Splits', you will find all kinds of more advanced metrics that better evaluate a player.
Another example:
Albert Pujols hit .331 in 2006. He struck out 50 times in 535 at-bats (9%). His BABIP was .292 while his linedrive rate was 18.0%.
Albert Pujols hit .327 in 2007. He struck out 58 times in 565 at-bats (10 %). His BABIP was .317 and his Linedrive rate was 18.6%.
Looking at those two years, you'll see that in 2006, while Pujols batting average was only 4 points higher, he was a MUCH better hitter in 2006 contact wise. His linedrive rate stayed the same. One year, he hit 49 homeruns, the next year 32. The difference was his Batted Balls In Play average. In a season he hit nearly 50 homeruns, he was extremely "unlucky" as a hitter.
If you looked at the two years, you'd think Pujols wasn't much different contact wise between the two years, when in fact, 2006 he was a better contact hitter...just contact right at people.