DBMM - What is a normal army?

In response to a question on the DBMM list on AP reduction for smaller 300 point armies Phil wrote:

I still think of 300 AP as a standard size army, so no.
As rules have simplified over the years, there has been a continuous trend
for people to use bigger armies to slow the game down again (and becausethey just cannot bring themselves to stop buying lead).
Phil

Those of us with small lead stocks should be happy - I am. ;)