Sorry, but using fundamental techniques that most players use =/= same game style.
Ryan Anderson rarely carries his team, and get gets streaky from downtown as one of the best bigmen 3pt shooters in the NBA. Yes, which is a good thing to suggest of Niko, other than Niko having a more consistent shot and being quicker. Niko also is superior at basic play positioning, outstanding at reading and playing the passing lanes(but yeah, sucks at defense
), and stays in front of his man. Knows how to avoid stupid fouls, and can get to the line himself. Niko can create off the dribble, where Ryan Anderson can only create outside shots and a few basic post moves.
Both favor face-to-basket style, that's true. But in the NBA right now, only a handful of players play back to the basket, and most of them are swingmen, rarely PFs. If Pau Gasol is the definitive soft big-man in the NBA, Niko already plays harder in the paint than Pau does, and rarely do you see young guys bang away anyways, until they hit their later 20s with added muscle.
If you want to say Niko might be a faster, smarter, more versatile, bigger arsenal, harder working version of Ryan Anderson(because you know, can only compare white players to white players apparently)... Then there might be more truth to that point of view.