For fox and deer, S&B is much better. Besides him trying to make money, the AGS will have had more mag than the S&B at those prices, he may have thought that you would benefit from a bit more mag, and for fox he may have had a point.
But, the glass on the S&B is top-notch, if you did want the mag, you could consider Bushnell Elite 4200, Leupold VX-III, or if you can find it, Zeiss Conquest. Of the three, the Zeiss is the best optically. All of those are much better than the AGS and will be in the price bracket of that S&B.