pure shooter, but Tanner creates a bit better (though he's no Dawson Baker). Size & strength-wise they're pretty even. Athletically they're similar too, but I'd give the edge to Tanner probably. He gets over the rim a little easier it seems, anyways.
If I had to choose between the two I'd go with Richie every time. But Tanner could outplay Richie on any given night, I think.