Invisible Wars was... decent.
Problem was that it was being held up as a sequel to one of the most beloved PC classics of all time, and to those kinda high standards decent just doesn't do.
Plus it felt sloppy as hell, the combat was awkward and stilted, the level design simplistic, and the options nearly all irrelevant. There's a reason whenever the 'consolization' theme pops up Invisible Wars is nearly always held up as the poster child; It just didn't work well. At all. And the compromises the developers had to make to force this game to work on the Xbox show in nearly every element from the subdued visuals to the absolutely miniscule levels and plethora of loading screens.
Compared to Deus Ex and it's massive levels, tons of character options, and brilliant design it just doesn't hold up.
However to be fair Invisible Wars did one thing, and only one thing, better than the original game and that is the voice acting. Beyond that though... meh! It wasn't terrible, it was just a forgettable bland sequel which most people would have forgotten for now were it not for the fact it's a sequel to Deux friggin' Ex!
I have very little hope for the new game either I might add.