Give him a sword and he's unstoppable. But give him a bale of grain, and he's an ordinary man.
Don't give credence to the halo effect. It's tempting to believe someone who's been successful in one area will be successful in every other. Or that an entrepreneur can do it again. There are many one-shot-wonders out there. Look at the 80's for a good example in the music world. Repeating their actions won't make them successful again. Being innovative and new all over again will, but they can't constantly be trying to do the same thing. It's dangerous to put to much faith in past performance or skills.
Being able to wield a sword, means nothing more than handling a blade. The mentality/training/effort and process of training can be used again in other areas. But I have yet to see someone successfully parry a bale.
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