My new sub...

Alright so I previously had a MTX 12" Thunder 6000 500 watt until the cone started coming unglued and luckily I had the warranty. So I go talk to the guys at car toys and they say to come at 7:30 when the managers gone and they're going to give me the next model up so thats what we do. They install the MTX 12" Thunder 5500 300 watt. Now if ya ask me going from 500 watt to 300 watt doesn't sound like an upgrade... I looked on there site and there no longer is a 6000 though so I donno...It doesn't look like it will have the same problem as before but I was hoping for more wattage than less...Is there something I dont know? Cause if it is a downgrade im gonna go down there and get the same model as before or a better one back cause I'm not gonna take worse.