Let's not forget that Archie is still basically a novice in the managerial stakes.
He took over the team halfway through the season, and got us promoted by grinding out the results that Jackie Mac wouldn't have managed.
The first season in the Premier we played some amazing attacking football, and constantly shot ourselves in the foot defensively.
Last season, we were a bit more pragmatic, and therefore satyed up a little more comfortably.
This season, even more pragmatic (esp after the start we made), and are at present even better off.
HOPEFULLY, this is a temporary consequence of an evolution in the playing style. Getting Erskine back next year looks as though some of the issues highlighted here can be addressed.
Only worry is have is that we seem to be getting rewarded for (relative) mediocrity. Archie may then become even more pragmatic, as it's been proven to work!