[Sloth]

Of course they worship the same God -- the God of Abraham. The Muslims just happen to do it in an abominable way.

[RockyMtnMan]

God can only be known through his words. When you pray to God you identify him by his message. I would argue that Muslims do not know the god of Christ and therefore do not worship him.

Will he have mercy on them for not understanding the message? I guess that depends on who you ask.