Obviously they both play a part but I think the answer's given will depends on people's perspectives and goals at the time.
If you've been dieting like hell for a year, are lean, fit and all that or at least want to be lean and fit then I'm sure your answer will be skewed somewhat to the diet side. For the larger trainee or someone lifting casually it's not too much of a bother to just eat as they please with an emphasis on protein and be big and strong in the gym. That particular trainee may never have felt the pressure or need to diet down to fit into a weight class, so they really can't empathise here.
But let's not kid ourselves, for competition or being the best in a chosen physical endeavour both diet and training are integral. We can't just pay lip service to diet in that equation either.
Last edited by Fazc; 04-26-2012 at 07:51 PM.