I completely agree. The level of training required to be a sufficient defender is much more vigorous to be adequate than it is to be on the offense end.
What I disagree with is the notion that notice training is needed at bad breath distance.
It's actually quite the opposite. Farther is shooting and taking cover, with a retreat option.
Bad breath distance is actually more difficult training to prepare for. Too many different things are able to happen. It's more for a fight. It's the "fight" in the term "gun fight".