Those titles sound like clear, defined opposition targets for conservatives to fight against. It will be ten times as hard to fight "one of our own" when he strays from the path. W is more conservative than McCain -- and I voted for W twice, and was a cheerleader for him for 6 long years -- and look how many times W has let us down (Medicare prescription drug law, highway bill, NCLB, failure to veto McCain-Feingold, etc.). A Pres. McCain would be far, far worse -- and leave us with a much more difficult primary fight 4 years from now.
A question.... have you considered exactly WHY the MSM and even liberals are touting McCain as the only "acceptable" GOP candidate? They want him for exactly the same reasons that conservatives do NOT want him. Everything that we know is wrong (about him and his record) becomes a piece of ammunition for liberals in the event of a McCain presidency. In the end, McCain will either (A) back down from his so-called, newfound "conservative" propositions or (B) be a spineless suck-up to the likes of Kennedy, Feingold, etc.
McCain ALREADY routinely chooses Option B. What makes you think he would do any differently as president? That's a helluva price to pay, simply so one can brag "Yay, my candidate with the (R) after his name won!"
If you read my post, the only reason I would vote for McCain over Obama or Hillary is defense related.
Otherwise, I agree there is not much difference.