I say RIGHT THERE that I'm talking about Model A! Good grief! You QUOTED me as saying "In contrast, with Model A". Of course when I say I'm talking about Model A, it is Model A that I'm talking about!

The problem is that even if I don't know very much about Model B because you haven't said very much (except it's "too chaotic for words"--gee, thanks, what an informative model!), the tiny bit you have said includes this:

"In Model B, the Galactic structure is nothing like a 'simple' star system. The collective pulls, and it pulls any which way it can. The spot in the center has the strongest gravitational depression imaginable."

So I was assuming that this "strongest gravitational depression imaginable" had something to do with what is happening to light (why else would you mention it?!) and that the depression has something to do with "the collective pulling", because, well, you basically said it right there. And you also said that Model B agrees with Newtonian gravitation in the appropriate regime.

So I estimated the collective pulling, and even if I immensely overestimate everything, that depression is not "strong" at all. The depression around the Earth is thousands of times stronger.

Now, I don't know how strong this "strongest imaginable" depression is because you didn't bother to state.

But I'm just showing that Model A, true to form, actually does have a very strong gravitational depression because of all the mass in the black hole.

You don't even seem to understand what a comparison is???