Yeah this stupid hoax but still hoax. All Vagner group which was deployed in this region was less than 500 at max. Vagner fighters participated in a taking Der-el-Zor in a region where about 30 of them was wounded and about 10 killed.
American strike was against a group of Syrian and Iranian militia who tried to get control of some oil fields near Der-el-Zor. Their number was about 300. See it where this 300 came from. American bombardment was killed and injured few of them and dispersed others. That is it.
P.S. Pushing this hoax story you really go against Trump interests. Because at any time the truth of this story can be disputed and Trump will go lair.
Trump proudly gave the order to eradicate those Russian and Syrian troops.
I support his philosophy of protecting American soldiers lives you see.