Carelessness or brilliance

Sir,
Does it not look magical that one earns 72 and 73 marks out of the total marks of 70? It has happened at JU Business school recently . In the exam of MBA 2  Semester students have been shown on its website scoring more than 70 marks out of just 70.
Is this an act of carelessness or a statement that students were so brilliant in performance that 70 were thought insignificant?
Yours etc….
Vipul Mahajan
Gandhi Nagar
Jammu