Possibly Incorrect Statistical Calculating, Leading to Misleading Conclusion

Based on the stats provided by baseball-reference.com, the Miami Marlins, in the 12 years that they have played under that name (2012-2023), have achieved a regular-season win-loss record of 806-1034, for a win-loss percentage of .438. The Florida Marlins played for 19 seasons (1993-2011) and had garnered a win-loss record of 1435-1575, which calculates to a win-loss percentage of .477. My curiosity led me to this question,... 'For comparasion's sake, how does the 12 years of the Miami Marlins compare to the 12 -worse- years of the Florida Marlins?' I defined 'worse' as the 12 Florida Marlins years with the lowest win-loss percentages, which turns out to be (in order beginning from the lowest) 1998, 1999, 1993, 2007, 1994, 2011, 1995, 2001, 2006, 2002, 2000, and either 1996 or 2010 (both years those having the same record). Totalling up the numbers from those 12 seasons comes up with a win-loss record of 835-1042, for a win-loss percentage of .4448588. Misleading conclusion...The Miami Marlins have yet to equal the record of the worst years of the Florida Marlins.