Sakaja clearly has a high IQ and that's genetics. Not having a degree won't take that away. He should have "sorted" out his degree issue more cleverly. It was sloppy, but you can tell he is clearly more experienced, has the practical exposure, is tougher, is more of a people person and will be able to deal with those ruffian MCA's.
Igathe looks like your typical boring corporate guy who really would do best sitting in the basement of an accounting firm crunching numbers and statistics, but overall, I think it shows that Kenya's democracy is developing and becoming more serious and hopefully, it will lead to voters rejecting illiterates like sonko, oscar sudi and others (hopefully, it spreads to rural kenya)