Glad I never bothered to play this game lol. I think beat-'em-ups in 3D need to be fundamentally different than 2D ones. For whatever reason, just walking up and punching a dude a bunch of times is fun in 2D...but so boring in 3D. You can't take what works in 2D and just force it into 3D. That's why the 3D Contra games all sucked. (I hear Neo Contra isn't so terrible but I haven't played it and they removed the ability to jump anyway, which makes it sound like an extension of the top down stages from Super C.) I think the case can be made that Devil May Cry is the 3D successor to the 2D beat-'em-up. You're doing similar things, like punchin' fools in the face, but the fundamentals are different, relying on connected combos. That game certainly has fluid combat! Another couple games I'd suggest you check out...if you ever get the chance...is The Warriors and God Hand, both for the PS2. They're beat-'em-ups and both highly regarded but I haven't played them, so I can't really comment on how they compare.
Good review! I was surprised you gave it even 2 stars but I suppose it's not a broken game, just a supremely boring one.