In what way?
Either way we are comparing chalk & cheese and that's the point isn't it?
You can compare similar cars at different price points, ie Zed, Cayman, XKR as they are all Coupes.
I can't honestly see anyone in the market for a Corvette C5 thinking "hang on what about a 4 door saloon instead...."
But the Monaro is not just a 4 door saloon, it is a high performance car with the same engine so has a lot of the same features plus added practicality and at a lower price.
Not a Corvette coupe though is it.... depends if you want to impress women or men I guess....