You should see some differences between the films. Tmax is a fully panchromatic film. Acros is somewhere between panchromatic and orthochromatic. IOW, Acros has less sensitivity to red and more for blue. In prints you should see darker tones for reds and lighter tones for blues than you would from Tmax. If I got that tonal relationship right.
And you'll probably have to look for it. I suspect the difference is subtle.
The blue tint you see on the Acros is probably some left over sensitizing dye. Wash it more; it will come out. Since you aren't printing in the darkroom it won't much matter. It won't have any effect on scanning. I find that my TMY-2 sometimes comes out a little pink. I've tested my process for residual hypo -- the fixer is washed out long before the last of the sensitizing dye. When I get pink film I just let it wash a little longer.
BTW, using anti-Newton fluid and an overlay with your drum scanner will get rid of Newton's rings. But you already knew that didn't you?
Finally, many people find the Tmax developer to be rather, um, harsh? Maybe rough is a better word. Too contrasty and grainy maybe. You might want to try XTOL -- it'll be smoother, give grain that's smaller and (to me at least) somewhat more pleasing in shape, and yet give you a real film speed that matches the box rating. I think it gives better results diluted at least 1:1. I like XTOL at 1:3 for TMY-2. But then, I'm using TMY-2 in 5x4 sheets. But if you use XTOL, do mix it using steam distilled water -- it's sensitive to disolved minerals in the water, especially iron.
Of course you could always use the old standby D-76. It should be available anywhere, or you can make it up yourself since there are recipes for it all over the 'net. D-76 is an "oldie but a goodie" as we sometimes say in the USA.