I ran the Monday Nite games and there have been ten games where a team scored 33 points and all were winners. There have been about 574 MNF games so I'd say that 33 points by a team is rare.
11.17.75 Bills 24@33 Bengals
09.03.84 Browns 0@33 Seahawks
09.24.84 Chargers 30@33 Raiders
10.06.86 Chargers 7@33 Seahawks
11.02.87 Giants 24@33 Cowboys
09.09.91 Redskins 33v31 Cowboys
10.07.91 Bills 6@33 Chiefs
11.25.91 49ers 33v10 Rams
10.31.94 Packers 33v6 Bears
11.20.00 Redskins 33v20 Rams

I'm doing the big book now, more later but so far I've found one tie in 1964 StL Cardinals 33-33 Browns...that would be a contest oddity.

Ahhhh retirement.