Amen to that
I feel very lucky that i have both in my team (I use LBJ as PG as I also have diamond Durant ) and I don't want to bench anyone.
LBJ is really versatily, he can defend all 5 positions, can score, rebound, dunk, and has better passing attributes than most PG cards. Ruby Kobe is less versatile but for me is the best offensive card in the game (Ruby MJ excluded I guess). Mid range is 90% in even contested, drivink can be stopped only by fouling, fully badged, easy and quick release to master. So it depends on what are the needs of your team. If you already have a high scorer and want a player to level up your whole team go with LBJ. If you think you have a good team lucking scoring go with the Black Mamba