I started a different thread about how Kingsford blue bag does not burn as hot as lump for smokin' turkey and beer butt chicken. I wanted a quick smoke, all I had was blue bag so I estimate it took 2.5 hours longer with blue bag compared to lump.
If you want constant temps I'd go with blue bag. Had the birds on a 22" WSM, the 3 bottom vents 100% open and top vent 100% open, averaged 225* the whole time and the ring was full, and a full load of lit briquette's from the charcoal chimney, outside temp 20* or so. I'll stick with lump for birds, not sure about butts and brisket and ribs.