Since I've tightened up my diet a bit (nothing major), my weight has gradually increased and I now look much larger than before at 208-209. My wife saw a pic of me from about 2 years ago and said she hoped I wouldn't get 'that fat'. I pointed out that I was 12-15 pounds lighter back then which says a lot about the results I am getting. Managing some good PR's too. I eat some junk like Doritos, choc chip cookies, pancakes etc and I am having booze for the first time in 3 weeks tonight.
Bottom line, I feel diet is important but I still think training is more important. Train frequently and use progression and you'll make headway with a decent diet.