I don't think it's ridiculous at all, Ramsey is often detrimental to both our attack and defence giving the ball away under absolutely no pressure, I think Wilsheres ability to clear our lines under pressure and to spray passes to his colleagues is far more beneficial to us.
He's quicker and has more zip than Ramsey, and we so often complain about the slow nature and sideways passing of Wengerball.
Ramsey is a good option to bring off the bench and yes he's more likely to score than Wilshere but I would drop him and Cazorla for this match.