How many did Atherton play when not fully fit?
FWIW, I've voted for Stewart, I just think some of the comments (both praising him and criticising Atherton) are a bit OTT and was giving some perspective.
Curious fact about Stewart, incidentally: when he was keeping wicket, his averages in the 4 innings were 33, 38, 38, 27; when he wasn't, they were 51, 41, 50, 44; if (as it seems) keeping wicket affected his batting, you might expect the 1st innings averages to be closer than the others... I had a theory at one point that it wasn't actually keeping wicket that hurt his batting, more that he tended to have to keep wicket when things weren't going so well for England, and that it usually meant he was batting out of position (not sure if this theory really holds up).
Has Stewart actually said what his feelings were? I have a vague memory of him saying he preferred to open, but can't remember if he said he preferred not to keep wicket.