Resistance against feats and skills

From: Guy Hoyle <ghoyle1_at_...>
Date: Thu, 23 Nov 2000 05:43:50 -0600

>>> Q: So why would anyone ever bother with feats and affinities instead of
>>> just increasing your skills?
>>> A: Because the difficulties are different. To leap a tall tree with a
>>> tree-leaping feat, you face the magic resistance difficulty of 14. To
>>leap
>>> a tall tree with your mundane leap ability, you face a difficulty of
10w3.

This part really confuses me. Why would the difficulties be different? I'm not terribly rules-savvy, but would the case be the same if you were using a Strength skill vs a large boulder, as opposed to Strength of the Bull?

Guy "Little asterisks and pound signs are circling around my head!" Hoyle

We Meddle in God's Domain So That You Don't Have To