I think they don't add as many because it is more mario focused. It would be crazy if they had like a mario kart that was a bit like super smash bros though.
Mine is Mario kart 7 and Double Dash
Yeah it is strange how some places have better games than others. Japan have even better games than everyone mostly with Playstation games
I agree the only thing I do like though is when a launch night is on. I went and got my Xbox One from a launch night rather than ordering online. That adds to a nice event and memorial night.