I couldn't help but notice that the only three SHs who weren't blubbering about Robin and Saul's reunion were the ones with the three highest bounties on the crew: Luffy, Zoro, and Jinbe.
That's not to say they didn't have any emotions for the reunion, ex: Luffy was smiling, but this composure shows not only willpower, but that they know they have to be coolheaded and prepared for any attack.