Your analysis above is seriously flawed. Yes, you are right, if one theoretically re-took every class he did bad in, he could raise his GPA that high. However, the number of classes that would entail would be many such 30 to 40 hours worth of classes. Furthermore, due to scheduling conflicts, a person would realistically need at least 2 years to repeat those grades. Finally, those grades still have Repeat next to them. DO schools look at your transcript so if they see you repeated 10-20 classes, you would have a huge red flag by your application and wouldn't be admitted unless you had a damn good explanation like multiple deaths in the family or you were enduring chemotherapy for your first two years.
Let's also add the fact that DO schools have higher MCAT's than Carribbean students. In fact, until just 3 years ago, St. George was the only Carribbean school to require the MCAT and utilize it as an evaluation tool for admissions. Around 2000, Ross required the MCAT but didn't actually use it to evaluate students in admissions until three years later.
Maybe the trend has changed recently but in the past, people with 14 MCAT's were getting into Ross because they were solely evaluated on their GPA and these candidates were not required to submit an MCAT score. So Ross, AUC and schools like that wouldn't even know how badly a student did on the MCAT. A lot of the former Carribbean grads were students, who for whatever reason, couldn't attain a respectable MCAT score such a 23 or 24. They would submit their 3.0 GPA and not their 16 MCAT's and get accepted. We all know students who can't test well for whatever reason. There are a lot of Carribbean grads with sub 20 MCAT's and decent GPA's. This is a big reason why Carribbean grads have lower USMLE passage rates than DO students. People who do well on standardized tests tend to do well in general. This is why Allopathic students generally do better on the boards than Osteopathic students. They have higher MCAT scores and that correlates with higher USMLE Step I passage rates. But this is also why Osteopathic students do better than Carribbean students on the boards. And let's remember that Carribbean students spend 6 months preparing for boards while Allopathic and Osteopathic students spend 6 weeks on average.
It's easy to assume that all Carribbean students were students who deliberately chose to attend St. George, Ross or AUC over a DO school but that would be like suggesting that all DO students chose to attend a DO school over an Allopathic school. I'm certain there are many students who could have gotten into a DO school but chose to attend Ross. I know that many CA residents have competitive stats but will elect to attend St. George or Ross because their state medical schools are too competitive unlike say Oklahoma, Mississippi and other states whose allopathic entrance stats are comparable to many DO schools. That being said, we all also know several students at Carribbean schools who wouldn't have stood a chance at getting into a DO school. There are quite a few number of 2.8, 20 MCAT students who are going to Ross and AUC. St. George is the only school that any stringent requirements whatsoever.
Lastly, do any of you find it strange that Carribbean schools aside from maybe St. George refuse to post their average entrance statistics. For the longest times, these schools refused to post these statistics. It was fairly obvious, they were deliberately trying to cover up their weak scores. Whereas, DO schools have consistently published their entrance stats without shame.
