Perhaps Greenboy exaggerates, then. Or there's some other way to account for the discrepancy. But either way, I probably don't need more than a good 410's worth of output.
His experience with his cab does not align with mine. I have owned/used the following greenboy cabs: 12/6/1, 15/6, 1212/6, 1515/66/1, F112, F115, F212, DuallyT, Bassic 12, Bassic 15.