There is currently a major shift happening in regards to the stats of applicants to dental schools (I know the post mentioned matriculants, but that is harder to explain).
At my undergrad (the #1 predental school in the nation in terms of applicants/acceptances/matriculants), it appears that the stats of the predental students will even out with our premed counterparts in two or three years. It is expected that the predental stats will then overtake the premedical stats in the next 6-7 years.
This is occuring because dentistry is gaining a much wider recognition as a healthcare profession with the greatest overall benefits. As demand for the degree rises, so will the quality of the applicants seeking the degree.
On the note of the DAT being easier than the MCAT: it truly does not matter. It the DAT were made harder, then the median would simply go down. The scores are reported along with percentiles, so the difficulty of the exam does not matter, so long as not everybody is achieving the 100th percentile on every section. As long as 17 or 18 is the national average, then a 20 or 21 is going to be a great score. If the DAT were made harder, then 15 or 16 might be the national average, with a 18 or 19 equating to the samer percentile as a 20 or 21 previously did.
In all honesty, I find it ridiculous to complain that the DAT is easier than the MCAT. It DOES NOT make dental applicants any less qualified to practice their profession. As I said before, the DAT takers are judged according to their scores when compared with other DAT takers. Those who do well on the DAT are the cream of the crop of dental applicants. We aren't vying for positions with medical applicants.
That being said, dentistry has ranked above medicine in level of income for 4 years now ($117,000 vs. $104,000), hours worked are far less than our MD counterparts, many dentists enjoy owning their own business and not being hospital based, dentists don't have to club themselves over the head with a q6, q5, q4, or q of any type, and dentistry is largely untouched by HMOs, PPOs, and other insurance hoardes. These factors, of course, apply to the general population of dentists and physicians. Just as medicine experienced its golden age in the 80s, dentistry is now heading into its golden age.