Leading up to Game 1 of the Stanley Cup Final (Monday, 8 p.m. ET, NBC), Pro Hockey Talk will be looking at every aspect of the matchup between the Boston Bruins and St. Louis Blues. Broadly speaking, the Bruins and Blues have been built in remarkably similar ways, so it makes sense that Bruins head coach Bruce Cassidy described the two as twins. Generally, the two show that you don’t need to bottom out for several years to find elite talent in the NHL … but you also need clever people to pull it off. There are some differences, though, of course. [Read all about how the Bruins were built] For one thing, while the Bruins have seen some different executives come through, culminating with current GM Don Sweeney, the Blues’ current structure can be credited to GM Doug Armstrong, who’s been with the team since 2008 and served as GM since 2010. Now, sure, the Blues’ other staff members deserve plenty of credit, too, but the point is that Armstrong’s been a guiding force. So, one one hand, the Blues are a testament to patience and savvy. Where other teams keep changing cooks and recipes, Armstrong’s been the one…