That just counts the regular stadium capacity which is the seats in the stadium not the added seats on the field too.ESPN keeps talking about the attendance.
"55,000 are here to see it"
Yet it's about 10 minutes until bell time and the stadium still looks about 60% filled.
Not to mention Suncorp Stadium holds 52,500 according to Wikipedia.
Not sure if I am seeing 3k extra seats on the field to make up that number plus the empties in the regular seating though.