A lot of foreigners seem to be painting it, judging by some of the postings on other forums, as a straight Tagalog vs. Visayan battle. But it, and also the Philippines in general, is not as simple as that.
I wouldn't vote for him but I confess I'm not at all sure who I would vote for. None of the other candidates have much appeal.
He also has age to overcome. 70 is quite an advanced age to be taking on a six-year term.
I think it's good for the process that he is running and it will definitely make it much more interesting. And even if gets close, but loses he will have still have blazed a trail for some other Visayan to have a stab at the office in future. Which means, with this being the Philippines, his daughter.