This "20 dollar fill up meal" includes EIGHT pieces of chicken. But take a look at the bucket we see on the screen; it looks as if all eight pieces are hovering above the rim of the bucket. What is holding up those pieces if it's not more chicken- and it can't be more chicken, because the advertisement is for an EIGHT PIECE CHICKEN DEAL.
I don't even have to assume that those side dishes are exaggerated in size, either. The overflowing bucket fake-out is reason enough to call BS on you this time, KFC. I mean, come on. What the actual hell are you trying to pull here?