Smallc wrote "In the real world, it's all about who gets the first shot. I doubt we'll be engaged in a large air battle going forward anyway, and if we are, we won't be alone."
Defence policy, unique in the range of goverment policies, must take into account all scenarios particularly the worst case ones. Don't count on anyone coming to our aid. You are correct in getting off the first shot but to achieve air superiority, you need to shoot down most, if not all, the enemy's aircraft. That is possibly in the thousands.
Based on 1945 numbers, we are capable of building the Canadian forces up to 2.25 million. We can do that but do we have the desire? If not, shut the whole thing down as a waste of money.