Actually doesn't prove anything. You'd have to go through each study pretty thoroughly to come up with a good analysis. There just isn't enough information here
After doing some quick research I understand that many fish oil supplements do not even the amount of healthy fatty acids that is on the label. While taking a fish oil supplement may or may not offer a benefit, you should focus more on getting your omega 3's from food sources. In other words, make sure you're eating your fish guys. Going in for some tuna right now. Peace