Think of the air passing over the wing as two regimes. One is the free stream air. Passing over a cambered wing this will speed up - Bernouilli

The other regime is the boundary layer where drag from the surface has slowed the air down. This also exists in two different forms.

The laminar boundary layer, the one at the front of the wing is smooth and thin. Inside it the speed of the air reduces smoothly from the free stream value to near zero at the surface. Because of this regular reduction in speed the average speed inside the layer is about half the free stream value, and this fact, and the fact that the layer is very thin mean that the total kinetic energy inside the layer is relatively small.

The turbulent layer is thicker and the turbulence pulls down free stream air deep into the layer. This has two results. One is that the turbulent layer has more kinetic energy and the other is that near the surface the airflow slows down very rapidly, causing more drag. Drag is bad, but kinetic energy is good for the turbulent layer punches through problems and keeps the airflow attached to the wing as you get nearer the stall.

In summary, the turbulent layer is thicker, has a higher mean speed within the layer, more drag but more internal energy