...if God is real and religioius truth is from God then i guess it is ultimate truth, whereas scientific truth is based on human perceptions which are sometimes wrong...if God isn't real then i guess scientific truth is the best we've got....
But, if God is real, then we've still got human perceptions of that truth, which is also sometimes wrong...or arguably often wrong.
The best arguments I've seen on God's existence are in the Dawkins and Lennox debate, on youtube. It's long but the best I've seen.