Write an AU of Harry Potter then. Don't make it follow canon events. How the hell do you expect Harry Potter to ever be intimidated by Dudley? He made fun of them all the fucking time. Even before Hogwarts. And in Hogwarts? First year, he faces Voldemort, denies him and fights him. Second year, he faces a fucking basilisk and kills it, without his wand. Third year, Dementors. Fourth year, the whole fucking Tri-Wizard Tournament and the Death Eaters with Voldemort coming back and fighting Harry afterwards.
And you somehow expect this particular version of Harry Potter to be submissive for Dudley? You expect every other witch to be submissive to a muggle? You somehow think that just because they lose their wands they're entirely powerless?
I am criticizing you fairly. If I wasn't, I'd just tell you to piss off. Instead, I am trying to point out how you're butchering characterizations of characters. How you're mangling and crippling everything for the sake of driving the porn portion of the story.
If you don't care about any semblance of plot, of character interactions, why bother with writing Harry in the story at all, if all you wanted was Tonks to fuck Dudley?
You can't use one portion of the stuff and ignore everything else. What's the point of it all? Just the porn? Then fuck plot completely. Toss it out. Toss out everything that makes Tonks 'build up' for fucking Dudley. Just have the sex scenes and be done with it.
And my complaint about realism sure as hell wasn't about magic in this story, because let's face it, you're actually going to a great length to ignore magic in the story when it would be convenient, which I pointed out in the previous chapter as well.
As for the accusation of me being an attention seeking troll, you're wrong. I wouldn't bother typing all this out for attention seeking, there's other, more simpler ways of accomplishing that. But you saying that just gives you a way to ignore legitimate complaints, so go right ahead with it.