>I fail to see this charity and kindness in practice,

What about Zakat? https://en.wikipedia.org/wiki/Zakat

That is a pretty concrete and practical example of kindness and charity.

I wasn't aware of it, seems like a good practice indeed.

If you weren't aware of one of the basic tenets of Islam, then you might want to consider, say, reading the Wikipedia page on Islam before adding noise to discussions like these.

Certainly you have a point, I could be more informed on the theory. But I don't think that's all what matters. What reads in the Quran and how it's interpreted, and put into practice in different societies, countries and sects are two different things. For example, the Gulf-states would easily have the money to build the most well-being and equal welfare states in the world, if they so wished. Yet they haven't done it, which leads me to believe that no religion will overcome natural selfishness of people.

All religions teach their followers to show compassion towards the less fortunate of their society - and societies of all religions regularly fail to do this. Ideologies shouldn't be judged solely based on teachings, but also what actually happens. If there was an exceptionally good religion, it should deliver exceptionally good results. Religion and income inequality seem to have little correlation, which leads to a conclusion that they're all equally useful or useless in this practical aspect, no matter what other differences they may have.

Zakat is put into practice. In the UK for example, Muslims make disproportionately large charitable donations compared to other religious groups or non-religious people.

It's also a country intertwined in ruling level with a sect that is considered the most radically fundamentalist and considered "bad idea" even across many other Islamic factions.

True. Unfortunately they have plenty of money, which has allowed the influence of this sect to grow in other parts of the world as well.

Because the left actually looks at the numbers. Immigrants tend to lose the nasty part of their religions really quickly.

Only when they find a job and integrate. At least most European countries haven't been very successful at making this happen with migrants/refugees who have little education and money when they arrive. It appears the US is better at this.

Success rate varies, but when it's low, it's usually because of the legal hurdles imposed by those countries, eg having to wait an obscene amount of time to get a work permit.