Personnally if I have a choice between the two I would much rather watch boxing. I have a lot of respect for the MMA guys, it takes a lot of guts to get into any shaped ring for the purpose of attempting to beat the crap out of someone else. But as far as just a visual medium boxing is better for me.

You can not compare boxing and MMA fighters, its apples and oranges. Of course the MMA fighter would win 95% of the time vs a boxer, it is a completely different format if they were to fight in an empty field.