Do you listen to Mathammer?

Of course, generic Mathhammer would also tell you not to go for heavy armour on your Maneaters (that happens cross-read some threads!), due to the ammount of S4+ unit out yonder.
But I still do equip my scouting, swiftstriding braces-of-ogre-pistols-toting Maneaters with it, due to the local conditions of facing lots of Str 3 units and the fact that being able to avoid 5 of 6 wounds suffered (against S4 or armourpiercing S3) may help you out of a tight spot. Why? That's one (heavily) wounded Ogre instead of a dead un, and scouting Maneaters might be a little way off from the Butcher's buff bubble, so they need some protection.
Seems like I still used a Mathhammer argument to support my preference for heavy armour. Call it insurance armour, if ye likes. But then, your mileage may vary.

Where is the romance and the drama in thinking like that in a game of Fantasy battles!!!!! 

I stand by my earlier post. I work out some odds, but I don't always play the odds. Sometimes, math will tell you that your big unit worth 1k VP will in all likelyhood beat your opponents unit, but if you have already locked the win, will you take that chance???

Since when does understanding the odds mean you never take a chance?

The better you understand the odds, the more informed decisions you can make. That doesn't mean math-hammer is "wrong" because you take a risk. But it's an informed decision. Sometimes you take actions (e.g. charge) with low odds of success because there's little penalty if you fail, other times you take that chance because your back's up against the wall and it's the only way you can dig yourself out of the mess!

Math-hammer doesn't suddenly replace tactics. Math-hammer is what tactics are based on, if you can't judge a match-up or an odds of success even in general terms you can never be good at this game. But this doesn't suddenly mean you're a slave to making every decision meet some arbitrary level of probability of success!

Of course, generic Mathhammer would also tell you not to go for heavy armour on your Maneaters (that happens cross-read some threads!), due to the ammount of S4+ unit out yonder.
But I still do equip my scouting, swiftstriding braces-of-ogre-pistols-toting Maneaters with it, due to the local conditions of facing lots of Str 3 units and the fact that being able to avoid 5 of 6 wounds suffered (against S4 or armourpiercing S3) may help you out of a tight spot. Why? That's one (heavily) wounded Ogre instead of a dead un, and scouting Maneaters might be a little way off from the Butcher's buff bubble, so they need some protection.
Seems like I still used a Mathhammer argument to support my preference for heavy armour. Call it insurance armour, if ye likes. But then, your mileage may vary.

Exactly. Most decisions regarding random elements in the game can usually be phrased in terms of maths even if you make it based on a gut decision.

"on a gut decision"
I saw what you did there