I'd debate the performance he had against the Patriots was better, either way his playoff run that season was one of the best if not THE best by a QB ever.
Kelly was as much as a gambler as Josh is, the only difference is he had a Hall of Fame cast around him. Thurman, Reed and Lofton. An offensive line that we'll never see the likes of again with Wolford, Richter, Hull and Ballard. Oh and on the opposite side Bruce Smith in his prime, the best player in Buffalo Bills history.