I'll preface this by saying that I, like many of you, am a huge Bowen fan. His importance and significance during his time as a Spur went far beyond what any statistical measurement could indicate. That being said, I'm not sure he deserves his jersey retired. I'm not saying he doesn't, but he's not an automatic a la Gervin, Robinson, Duncan, or even Parker and Ginobili.
While I didn't see Johnson's career in it's entirety, I don't think he should have his jersey in the rafters. To me, when you put guys like that up there you lower the standard, and then where do you stop? If Johnson is up there, Bowen should be, but really, should either? That sort of honor should be reserved for the great or near great; not the good or very good. This may be somewhat contradictory, because Bowen was certainly great at what he did, but even the most avid Bowen fans would have to concede that he was not a truly great player. He was a limited player who knew his limitations, worked his tail off, and had a high basketball IQ.
Maybe being the 4th most important player on 3 championship teams in a 5 year span should trump that, I don't know. I guess that's what it comes down to: should winning trump the fact that on stand alone merit he otherwise wouldn't even be under consideration for having this honor bestowed upon him?