The dimensional tolerances are usually better for machines with smaller build boxes.
VPP is as technology known for being very exact. We can achieve geometrical tolerances of up to 0.01 mm with a layer thickness of as low as 0.05 mm.
PBF-LB/P typically achieves a layer thickness of up to 0.06-0.1 mm with a XY accuracy of down to 0.3 mm.
MEX can achieve very high accuracies as well with 0.01 mm. Although typically most MEX systems do not achieve this level of accuracy.