I don't think it would be more OP simple as that. Only if Naruto has a child with either Uchiha or Senju then nobody is going to bring anything of similar worth to the child.Bro instead of arguing why Naruto and Hinata's child is OP. Please put your input on why Sakura's child with Naruto would be more OP.
I also don't think pairings should be decided on the OPness of the child.