at the very least, with a punch shot, you skip the lengthy full swing animations that happens if you do a regular full swing from the tee (or even from your second shot if it's a par 5 hole).

it's different from 2005 where you have the option to disable the lengthy full swing animations and gamebreakers altogether so doing a full swing from the teebox doesn't penalize you as much.

there's obviously holes where you don't want to do a punch shot from the teebox (from what i've played its usually par 3 holes) but that's where learning the courses comes in handy.