You are incorrect in your statement that lowering cholesterol is not the primary mechanism by which statins are proposed to lower the incidence of CVD. Check Wikipedia and any of the statin websites. This is from the Lipitor website:
“Statins lower cholesterol in the body by blocking an enzyme in the liver. The body uses this enzyme to make cholesterol. When less cholesterol is made, the liver uses more of it from the blood. This results in lower levels of cholesterol in the blood.
Along with a low-fat diet, LIPITOR is clinically proven to lower LDL (“bad”) cholesterol by 39%-60% (average effect depending on dose).
If you have high cholesterol, it’s important you be proactive about your health. Having high cholesterol levels can make you more likely to have a heart attack. Talk to your doctor about your risk and if LIPITOR is right for you.
LIPITOR® (atorvastatin calcium) tablets are a prescription medicine that is used along with a low-fat diet. It lowers the LDL (“bad”) cholesterol and triglycerides in your blood. It can raise your HDL (“good”) cholesterol as well. LIPITOR can lower the risk for heart attack, stroke, certain types of heart surgery, and chest pain in patients who have heart disease or risk factors for heart disease such as age, smoking, high blood pressure, low HDL, or family history of early heart disease.
LIPITOR® (atorvastatin calcium) tablets can lower the risk for heart attack or stroke in patients with diabetes and risk factors such as diabetic eye or kidney problems, smoking, or high blood pressure.”
Reduction in vascular inflammation is a minor part of the statin mechanism of action and thus, confirms that statins are primarily used (and effective) in those who have established CVD, not as a primary preventative measure as you have previously stated.
Whether Omega-3 fatty acids have a positive effect on outcomes of heart attack and stroke, is not relevant for me, as I have not had either a heart attack or stroke, and Omega-3 FAs provide other healthy benefits that make them an important supplement to my less than ideal diet.
Lowering cholesterol is only useful if it reduces the risk of health problems like heart attacks and strokes. While statins do lower cholesterol it dos not appear to be the primary mechanism by which they reduce the risk of these diseases. Statins have the ability to reduce vascular inflammation and this may be more important than lowering cholesterol. There are a number of other types of medications that are capable of lowering cholesterol and none of them reduce heart attack risk to the same degree as statins. As stated previously Omega 3 fatty acids can indeed have a beneficial effect on the lipid profile and yet they have not been shown to have positive effect on outcomes like heart attack and stroke.
Wikipedia is not an authority. That being said the quote you posted here does not support your statement. It simply says that statins lower cholesterol and they also lower the risk of a heart attack. Your conclusion that lowering cholesterol is the main mechanism by which statins reduce the risk of heart attacks is neither correct nor supported by the statements in that article.
For future reference, Wikipedia is not an authoritative source of information. Its OK to use it as a starting point but you need to do real research from authoritative sources if you want to be sure you are getting accurate information.