Is UoE really mills or worth for a low gpa candidate?

Recently one of my friends got admitted into UOE potsdam, because he didn't have enough CGPA to get into public.

Although I warned him, he did because thats all he can afford and he didn't have the public universities requirements on his paper.

1.Was the decision right or should he still pull off ?

2.can he switch to public uni after getting admitted into pvt uni.

Profile - 6.0 gpa(ECE)

lelts - 6.5

As there most of experienced candidates here, i seek your advice so that i can replicate that to him.