I seem to recall Bob's conditioning being a bit off in his contests in 88, 89 and 90. Earlier in his career he would get more shredded. He had size, shape, symmetry, proportions but tended to look a tad smooth next guys like christian, Strydom, Benaziza, Benfatto, Labrada etc...
He 'came out' in 89 so it's easy to blame his decline in placings on that but by 90 he was phoneing it in. With all due respect Dickerson was a well known rump-ranger when he won the O just a few years prior.