No. I don't think they all taste the same.Of course grocery store eggs taste like cardboard; that's a given. Backyard chickens raised on mostly layer/bag feed, taste much better. But the eggs from birds that get to free range and eat a wide variety of grasses, bugs, and other protein, have the best tasting eggs. The yolks will be a bright orange rather than yellow.
I have heard that eggs can take on the flavor of what the chicken eats. It's recommended to not feed things like garlic because it can taint the flavor of the eggs.
As for the yolk to white ratio, if you've only eaten store bought eggs, then you are used to runny whites that may seem larger in proportion to the yolk. Very fresh egg whites are firm and don't spread out as much, making them seem smaller.
Give fresh eggs another try. They are wonderful!