The Chinese mystic (named Hong Xiuquan) declares himself to be the younger brother of Jesus Christ. Although we would both (I presume) deny that he was right here, you would have to say that he was worshipping God, no matter how muddled he was, because what you’re in effect arguing is a way that allows ANY person/group that claims to be worshipping our God to be legitimate, insofar as their claim to be worshipping Him.
No the other ‘attributes’ Moslems give to their god are not like our God at all.
Their ‘god’ picked a man as prophet who over-saw the execution of PoWs, and who had intercourse with a nine year old girl. This type of ‘example’ that they follow is appalling. So you would have to both argue that they are wrong in believing this and, right too (to a degree), because they’re worshipping our God.
There is no truth of God in Islam.
I would say that there’s a ‘partial’ truth in Judaism.