There are lies, damn lies, and.... specs!

But if you HEARD them, in a decent room after being optimized by someone familiar with them (best of luck finding a pimply sales'man' capable of THAT!) and weren't impressed, well, that's a different kettle of fish.

But low end specs vary so wildly... lowest Hz possible whatsoever, lowest Hz @ (x)db down, lowest Hz @ (x)db down @ (x)Watts, lowest Hz @ (x)db down @ (x) Watts @ (x)%THD, etc., etc..

They mean NOTHING (except maybe the last one!)
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An arranger is just a tool. What matters is what you build with it..!