Looks in the range of normal to me. My blueberry and red jabo leaves get pretty bad-looking in the winter. My red jabo looks much worse than yours currently, but it will get new leaves in the spring. The purple coloration is due to anthocyanins, triggered by stress, probably cold.
Looks like the blueberry fruited in the fall then got cold damage on the fruits, but not sure. Also looks like the blueberry got a bit of damage from the sun. The only thing that concerns me a bit is the spots on the stems.
I don't know about the white splotches on the pitanga, maybe the leaves got wet in the sun, then the sun scorched those spots?