I look at it this way,
If whiskey was only distilled to 25%, would it have that same intensity?
If wine was only 6% would it be able to carry off such a huge range of different flavours and subtlety?
Would port be the exquisite drink it is if the base spirit was 25% and wine at 6%?
Therefore if you make a beer into what is effectively a wine, does it have the ability to pack the same sort of punch as a bottle of chateaunuef du pape red?
I think the answer is yes, but with the added bonus that you don't need exceptional grapes, lucky weather and can make exactly what you want just by choosing base ingredients