I would first like to emphasize that I have absolutely nothing against going DO, my fiancé is going DO. Furthermore, I do not want to make this a pissing contest between DO and Caribbean; however, you made some pretty audacious statements that I feel need correcting.
Firstly, there are some carib schools that take MCAT into consideration (SGU and Ross) for example. The average score is 24. That means that half of the students did better than 24 the range is up to 35. The flip side of that is half the people did worse. Yet, if MCAT was not taken into consideration I doubt there would be a bell curve. Feel free to check it out yourself if you do not believe me.
http://www.sgu.edu/website/sguwebsite.nsf/Medicine/FirstTermEntrantsMed.htm
Secondly, Matching anything slightly competitive is slim. SABA matched neurosurgery this year. One could easily argue this is the exception rather than the rule. Yet, again, looking at Ross and SGU I feel they have quite strong representation in: Anesthesia, Emergency Medicine, Neurology, OB/GYN, Pathology, Radiology, and Surgery. With a few Orthopods thrown in here and there. Feel free to peruse:
http://www.sgu.edu/website/sguwebsite.nsf/Home/2005ResidencyAppointmentListBySpecialty.htm
http://www.rossmed.edu/Residency_Appts_/residency_appts_.html
Thirdly, since you brought up your good friend who matched general, I will bring up mine who have matched Anesthesia, Radiology, and Emergency Medicine, and General Surgery, all from carib schools. All have gone on to have fine careers and are doing very well.
I would like to articulate that I am not pro-Caribbean. It is undoubtedly an uphill battle. But, as long as one goes into the experience with his eyes open and works hard, there is no reason he will be excluded from competitive residencies. Note: Things such as Dermatology, Plastics, and ENT are VERY difficult for a carib FMG to obtain. DO does not have the easiest time getting these either, though.
Please understand I am not trying to berate you OR promote Caribbean schools. I simply feel it is important to discern fact from fiction as there are (unfortunately) consumers who read this forum as fact. There are certainly Caribbean medical schools out there that will let almost anyone in. There are others that are established and respected schools. Even if getting in were easy, to make it through these schools is a challenge. To make such a blanket statement (all are poor institutions) is analogous to stating, There are some really crappy/easy to-get-into colleges in Boston. Therefore, every college in Boston must be crappy/easy to-get-into.
To each his own when deciding between DO and Carib
No, I did not go to a Carib school. Just calling it how I see it.