I'm not sure this thought experiment is going to help with your goal of working out how martials need to be modified to be competitive and non-wuxia. Personally I'd suspect that a large proportion of the people who prefer martials to be mundane also don't like abusive spells such as simulacra and the others that you mentioned. In which case balancing the martials up to that level wouldn't be something that anybody would actually want, even if it were possible.
For myself I like some classes to be relatively 'mundane' (by which I mean doing extraordinary things rather than supernatural things), but I'd be more inclined to do that by balancing some spells rather than adding too much to martials. Probably with the exception that classes like the Fighter would have more skills than they do.