I think the Bills and Seattle are equally bad, but in defense of the Bills, at least Fitzpatrick has a modicum of talent and an actual brain in his head. I expect Tavaris Jackson to lead the league in suckage this year edging out Cam Newton on TD : INT ratio.
I also think its just as likely that Seattle moves as Buffalo, meaning not likely at all. Jacksonville will be the team thats moved next because nobody cares about sports in Florida. And if they do, its college level.
Seattle is terrible, I considered dropping them as low as 2-14. The only shot they have of brushing close .500 is because theyre in the worst division in the league they dont have to play the Patriots and Jets twice a year. The good news is I don't like the Seahawks nor this city, so the woes of its fans generally make me happy.
However, in regards of likelihood of moving, there are numerous reasons why the Seahawks aren't going anywhere. For starters, they are owned by Paul Allen, who is filthy rich and seemingly dedicated to spending that money on this swamp, so he couldn't care less how poorly they do, nor is he 92 years old. Also, while I question the heart of the average Seahawks fan, they are rather narcissistic, and enjoy their reputation as the "12th man", and therefore pack the stands and buy Seahawks crap, even if they don't really care about the team. So, despite being terrible, the team still does well enough in terms of support.
I would agree with you that Jacksonville is the most likely team to move in the near future, but that doesnt preclude the chance of another moving as well. If Jacksonville moved to, say, L.A., Buffalo could still end up in Toronto. Thats not to say they will but in terms of likelihood, well, Id say theyre more likely to do so than the vast majority of the league.