Thio, A Treatise: Art 19(2)(e) requires that candidates convince the PEC that they are persons of "integrity, good character and reputation", which is highly subjective. A contrary finding might be defamatory, so s 8A PEA confers immunity.
Qualifying criteria is more stringent that PM's, who has more substantial governing powers.
Qualifying criteria is too high. President works with Council of Presidential Advisors, and a purposeful construction of Art 19(2)(g) would be to ensure a candidate had financial literacy, not financial wizardry, since he has experts to consult. Finance Ministers aren't even subject to these criteria.
Having PEC may deter potential candidates.