"bad" food is DEFINITELY better. fwiw, the general principle in eating is this. it is MUCH more important to GET the good stuff (proper vitamins, minerals, anti-ox's etc.) than to avoid the "bad" stuff - trans fats, etc. fwiw, most of the bad stuff, trans fats excepted aren't bad per se. just bad in large amounts.
iow, it is better to get your veggies/fiber, etc. AND have some rubbish stuff in your diet, than even to eat "clean" if you are not getting all the other stuff you should be getting. that's part of the reason behind multi's etc.
your body is much better at handling crap than it is at formulating substrates out of thin air. it can't do the latter.
personally, i'd rather eat a bunch of crap AND get my omega's, my greens (i have a juicer), my fiber, my vitamins, then eat even very clean (chicken breasts, etc.) and NOT get the phyto's and good stuff
i know a guy who diets down to 5-6% and still includes mcd's hamburgers in his diet all the way down. it's total calories that will mostly define your fat loss, not so much where they come from (with a little bit of exception)
and if you're bulking (IMO), crap is not bad. it's kind of good, actually. but you're talking to a guy who just downed 12 cookies at 110 calories each along with my protein shake!
and if you're natural, saturated fat isn't even bad. too much is bad. without saturated fat and cholesterol in your diet, your T levels will actually be lower! i have never found, otoh, ANYTHING good about trans fats... but maybe i;m missing something?