Reincarnation is not the central tenet of Buddhism. Buddhism teaches:
I. The Way to the End of Suffering
II. Right View
III. Right Intentions
IV. Right Speech, Right Action, and Right Livelihood
V. Right Effort
VI. Right Mindfulness
VII. Right Concentration
VIII. The Development of Wisdom
Tiger was not strong enough to overcome his temptations, just as many Christians aren’t. There are many other errors in your analysis, but they are typical for most Christians, who panic at the mention of anything even remotely reperesenting eastern theology.