Don't forget the GH5 takes oustanding stills as well. I'm not sure how the DVX200 does at stills.
And the SLR type body allows you to get a much longer lens should you want to go that route.
As for pricing, you don't have to buy everything all at once with the GH5 system. You can add as you go.
And when the GH6, GH7, or GH12 comes out and introduces a spectacular new "must have" feature, you simply buy a new body, not a whole new setup.
And if your camera body breaks or fails (they all do eventually), you only have to replace the $2K part, not the whole $4K thing.
I'm not into videography, but it seems a clear difference in overall value to me?
I'm not sure why I'm even advocating one or the other.
I really don't care, but I guess I'm suggesting what I would do. The fact that any of these capabilities are available in these price ranges now is amazing.