You're misinformed. I can use the word "god" to mean the God of the Bible (Yahweh, Whom I worship) or I can use it to mean "a god" that someone who doesn't worship Yahweh might worship. Allah is a "god" (little g intended). Yahweh is THE God (big G intended).

The word for "god" in Arabic is "allah" (little a intended). When Arabic Christians say "allah" they are not ascribing equivalency between Yahweh and Allah (big A intended). They reject Allah as God (big G intended), though they recognize him as the god (little g intended) of Muslims.

To the Christian, Yahweh is the only true God. You can play language tricks all you want, but they reject Allah as a false god, even while speaking Arabic.

I don't wish to argue with Frederick Minshall, but I think he already knows that we do not worship the same deity. Millions of Christians have died because our God says we cannot worship any other gods. It's a non-negotiable tenet of the Christian faith.