I know ASICMiner won't sell equipment until BFL releases theirs. At that point, they will collude through pricing to form a duopoly until a third company provides equipment. I think BFL will have a slight advantage in timing to get to market. I think they have more expertise in selling, and shiping, as well as quality control in place. ASICMiner will essentially be the AMD to BFL's Intel.
You're making too many assumptions. Both companies write their business plan as they go. The difference is BFL is private, while ASICMiner is shareholder based. Comparing them to AMD and Intel is a fallacy - but I am curios - why would you have that perception?