Big difference between broadcasting and writing, as you know. Has Sully become enough of a Buffalonian to hope the local teams do well, for the sake of the city and its residents as much as anything else? Yeah, he probably has ... but that's still a hop, skip, and jump away from being a "fan."
Remember JP's infamous rollout in the Meadowswamp, and all the screaming here that accompanied it? According to someone else in the pressbox that day, Sullivan laughed at that play. They all did, following a chorus of, "what the F* is he doing?" That's the difference between a hometown writer and a fan. We're emotionally invested in the outcome. They're not.