My family is HUGE! And the one that gets to do thanksgiving- takes on like 25 people... lol.
I found that the oven is the oven- doesnt matter what is in it- the oven still cooks at the temperature. Its not like the microwave- that density will attract the most heat- the oven is the oven- what ever is in there is cooking at 350 ( or whatever its set as..).
I have yet to have a raw turkey and the stuffing is done- two huge containers- same temperature..