Most of the Vortex line is usually readily available for immediate purchase.
A lot of game is taken every year with Vortex Scopes; most certainly more game than with SWFA scopes. Likewise, I'm sure tons and tons of game is taken each year with 700 style and Savage actions vs more robust designs. More Rocky boots are worn on hunts than Kenetrecs, Crispis and Miendels. Popularity doesn't have a direct correlation to which product is more mechanically sound. Popularity might be an indicator that a product meets the minimum use standard of a lot of users, but it's not a relevant measure of product equivalence.