That is not saying a person who worships a pagan god will go to heaven.....

He's saying that people can't make excuses for why they didn't come to God because he's self evident in nature. What you're trying to say is that if a person does good works, he will go to heaven, no matter if he worships Christ as God or demotes him to a mere prophet apparantly.

I wonder what one of the Popes of the middle ages would have said if you told him his Church now says they worship the same god as the Muslims. He'd probably call you a heretic and burn you at the stake.