Lucky for the Pats deserve has nothing to do with who wins:Pats deserve to lose for being cheats.
SB 19 - Marino (one of the greatest ever loses his only SB appearance)
SB 27, 28 & 30 - Dallas wins despite being one of the most obnoxious teams in history. Don't forget the numerous cut blocks (never called) that open huge holes for the overrated E Smith to run through. Plus thugs and cokeheads on the team.
SB 32 & 33 - Denver wins both by cheating the salary cap to have a better team
SB 35 - Ray Lewis is involved in a murder before the season and ends up being the SB MVP
SB 37 - TB wins with a bunch of obnoxious players (Keyshawn, Sapp, and Gramatica) and a coach that deserted his previous team (the team he beats in the SB partly because the idiot Raider coach doesn't change his calls and audibles which Gruden knew because he was the previous coach)
None of it matters overall and it usually comes down to who is the better team and who executes their game plan better (as it should be).