I've had great luck with a batch of bagseed I got from a friend of mine - I also have a 'Barney's Farm - Bluecheese' in with this grow, and it's noticably more powerful (smelling that is, so far..)... I guess that goes to show that good genetics from a seedbank are statistically better... at least in my case. But check out my grow journal and see how (as others have said here) a little TLC can help a lot too. I guess just because your bagseed came from 'sub-par' pot, it's always possible that you will do a better job growing it than it's predecessor.... =)

Bagseed & Bluecheese grow journal...
Bagseed & Barney's Blue Cheese - Marijuana Growing