I don't think either of them are geniuses myself; I reserve that term for a very select few--Brocka, Bernal, the two De Leons, O'Hara, Ad. Castillo on his good days.
Was Montano miscast? Jaime Fabregas spoke better Spanish. I'm hardly an objective observer, but I thought Albert Martinez was a genuinely intelligent, intense Rizal. And I can't imagine a Rizal that smirks, the way Montano does.
Actually, Gardo Verzosa, who was a terrible Andres Bonifacio in Marilou's movie, was a moving Rizal in O'Hara's Sisa.