Hm I haven't paid attention to scrimmages at all, but my guess would be that SB applies against (some? more?) "open" inside shots in the "rotates over to help" sort of way. So that would affect big men more often, but maybe littles stronger if it's a SB-vs-IS comparison...
Basically I want to make an outside team so I don't have to worry about it
and so I can see LI fail sometimes!