I have studied comparative religion, Judaism , Christianity, Islamic, philosophy, but I am Buddhist. True compassion, means having understanding.
Religious debate often results in negative comments, so it is a touchy subject to walk, however I am Buddhist, and that means speaking with wisdom rather then the desire to be right or wrong.
It is the actions of individuals that matter. Yes Abrahamic beliefs have resulted in some atrocities in history. However it is the minds of each individual that cause this effect. Some blindly follow without question, some generate justification. Much reflecting their beliefs, but a lack of understanding of them. Political aspects play a role as well. There are also many who call themselves Buddhist that have done things out of not seeing, incorrectly. Once again they cause it, they cause their suffering, and allow it.
We have many schools and approaches to Buddhism. At the core of them all is the core dharma. The longer you study and realize, the sooner you realize the teachings are based on individual groups, and how to "trick the mind" into letting go of ego.
Blame effects on your own cause, not the cause of others, the beliefs you followed. Karma (cause and effect) is not a magical force. It however does effect your true mind in life. When clouded, the true nature can not be seen by your own eye.
We cling. We become attached. Attachment leads to suffering. We can't see clearly the way things are, about impermanence, Letting go is not the same as giving up. I use the example like this. Hold a bunch of marbles in your hand, palm down, fist clinched. The marbles are experience. You struggle to grasp and cling them, eventually wearing yourself out, till you open the palm, they fall, and you give up. That is not letting go, that is giving up. Instead hold the marble in the palm of your hand, palm up, hand open. That is letting go. You can still have experience without clinging in attachment, being struggled, and suffering.
We cling to Items we purchase in own. You see something you really desire in a store. When on the shelf, and it falls off and breaks, you tend to say "Oh what a shame". However when you buy it, take it home, build a "connection" of attachment, but later it breaks, frustration, upset, anger, and other forms of suffering become triggered in the clinging to it. Rather then simply enjoying the experience, and when gone, remember what was learned.
Buddha (that we know from over 600bc) made clear statements. He is a man who found liberation and clarity. Don't take his word for it, test it, see if it works, prove it.
Basics of Buddhism:
4 noble truths. There is suffering. The cause of Suffering. The cessation and liberation from suffering. The path to the end of suffering.
8 Fold path: The key word translated is right. Also Complete, wholesome.....
Right View
Right Intentions
Right Speech
Right Action
Right Livelihood
Right Effort
Right Mindfulness
Right Concentration
This is done in every thing you do.
Buddhism which predates the actual formation of Judaism and Christianity, teaches that you alone are responsible. In order to benefit all sentient life, you must work with mind to purify consciousness so your true Buddha nature (awakened state) will be present. You can end suffering, and much of your own generated suffering.
Christianity with it's origins from Judaism, teach with focus on a creator, but it is also important to know the origins of both, much of which share aspects with many prior faiths and there is no need to "fight" and debate over it. The added aspects is love for each other, do not judge (this is far to often forgotten) and forgive. However if you view it in how you think it should work, those teaches will do you no good. So be wise versus learned.
Buddhist try to clear mind, and reflect the qualities of the Buddha, their guru's, to benefit others as well.
Christians should reflect the similar qualities in their teacher, Christ (yeshua). Some reflect the qualities of the story of the fallen angel who's ego got him cast from heaven. SO reflect correctly.
A person must seek, explore, test, reflect on, and find his path.