To help unravel the inaccuracies, fbb has appended the Travel South Yorkshire stop codes.
There is no stop "C" as shown on the ATOC map.
Stop "B" [TSY's SS3] is here ...
And this is stop "A" [TSY's SS1] which is on the east side of Paternoster Row, ...
But look again at the picture of stop "B". Behind and beyond the shelter is a bus, in fact the city centre "FreeBee" service which links many useful central stops and destinations. It has stopped on the west side of Paternoster Row, a stop completely ignored by the ATOC map. This is TSY's SS2. Several other useful services call there!
The other stop missing from the map is TSY's SS4 used by a big group of services travelling south east from the city and, again completely ignored by the ATOC map.
east side of Sheaf Street and opposite where stop C would be if there were one. All is made clear (sort of) on the fbb map below.
Alternatively, and ignoring ATOC's map, you could use stop SS4 right outside the station. It's a bit quicker(!) and it's flat; but the ever-helpful ATOC would just love to see you walk an extra distance and up a steep hill and ignore two other stops on the way. Of course the problem is that ATOC doesn't know stop SS4 exists. Potty and pointless!
Conclusion Number 3
Clearly whoever (or whatever) compiled the ATOC "station" map has never been to Sheffield. The mistakes are so obvious as to lead an informed observer to question the sanity of those who created it; and the incompetence of ATOC for allowing it to be published. The consequences for an inexperienced passenger are potentially horrific.
Wot, no bus pictures?