Berries are definitely not the same as try have ever been. There is a huge variety of berries available in the wild that bear little to no resemblance to common berries found in stores today. The differences can be something as basic as size, take he extremely minesculenwild strawberry vs Driscoll brand strawberries that can be up to 50 times larger, and mostly full if water and sugar and lacking nutrient density. Same goes for cultivated blueberries vs wild which have much higher pectin content. Berries like sumac which are tart and fuzzy, unlike anything we use today. Rose hips and wild currants, again having high pectin and vitamin c and low sugar contents compared to what we consider berries today. Driscoll brand, which is large commercial producer, works to breed raspberries and black berries that are able to be mechanically picked, harvesting them before proper ripeness has been attained certainly makes me think that they would not have as healthy and nutrient dense profile as berries left to fully sun ripen. Wild plums, while not a Berrie, are another good example, they grow in abundance on he north american continent, are rarely harvested, are sweet and delicious and full of pectin and honestly rely on bears, coyotes and humans to spread because the pits are too large for smaller animals to pass in their feces. They are extremely small compared to the poults and plums of today and even so were cultivated by natives. The fact we have on demand water in agricultural centers changes the duration of seasons and allows he process of food cultivation to speed up dramatically, food is constantly changing.
Wild foods, especially greens hat become food for wild life. Tend to have different and much more sturdy root structure and the variety alone helps the plants pull up different nutrients from the soil and increases the diversity of nutrients that wild life receives. Also being able to grow in various types of soils that contain different mineral content is very important.
Eric covered this but Anti nutrient content in wild plants is also much different. Those bitter, sour, pungent tastes have been bred out of leaves, stems and roots, which enables us to eat more plant materials. Whether this is good or bad depends on your constitution by for some this can cause a lot of irritation.
Whether they are healthier or not depends on how the foods thrive in heir wild environment and then on how they fit into your lifestyle and diet.