Don't worry about "factory angles". Worry about what you like. Half the time skis come from the factory inconsistent from ski to ski or even along the whole edge of one ski. Then, too, some shops do a quick tune to whatever they like, without regard to the factory tune, before you ever get on them. Yeah, probably this guy didn't measure the angle. But do you like what they did?
If the answer is no, then what is it that you don't like? Without knowing that, then telling you to go to 1/3 or .5/2 or whatever is just people telling you what THEY like.
Also, how are you using them and where? Do you plan to do your own tuning? I like a 1/3 on my groomer skis, but 1/2 on my powder skis. But I do my own tuning, so can change my mind any time.
The average Joe wouldn't like a .5 base edge, but many people here do. It engages the edge more quickly, and requires you to be a pretty good technical skier, because it'll react sometimes when you don't want it to, and is probably not the best base bevel for ragged surfaces. But for a SL race course? Of course you want that. As for side angle, it'll bite deeper with a 3... But you may like skidding your turns or, you might be skiing soft snow where the angles are largely meaningless (lucky you!).