Simplify the following text for a Grade 11 native English-speaking person.
Original: It is the only division in the NHL where all of its current members have won the Stanley Cup at least once ( in fact , all 5 teams have won it at least twice ) , though only three teams have won the Stanley Cup as a member of the Atlantic Division .
Simplified: It is the only division in the NHL where all of its members have won the Stanley Cup at least once ( in fact , all five teams have won it at least twice ) , though only two teams have won the Stanley Cup as a member of the Atlantic Division .