i can't determine that by what kind of car he drives and fact that he has a jet. i don't believe the Bible teaches us every rich man is corrupt or came to riches through evil. it doesn't teach that every man God approves is rich either. having wealth isn't sin just by itself, and blessing from God isn't always in the form of earthly wealth tho it may be.
if i listen to his sermons maybe i will know whether what he says is true or false. i am sorry i have not had time to do so.
the verses i mentioned previously are here:
Deuteronomy 13:1-5 --- if a prophet performs real miracles but leads us to a different God, he is false
Deuteronomy 18:21-22 --- if a prophet says 'this will be' and it isn't, he is not speaking by God
as for if he preaches a false gospel, we have the scripture and we compare what he says. and then if it is not right, we don't know if he is a liar or whether he has no understanding just because we know he is not telling us the same gospel, but we know we should not listen.
like you said he is a half a world away from me, what can i say? i can listen to some of his teaching when i have time. maybe most important point of the thread is 'how do i know?' because the same things apply to teachers who are near as those who are far.