Yeah, you've said that before. I don't quite get that, but again, we all have different tone goals. I did have 'the best' luck with my Walters and my 's' stack (virtually identical to the HT322). That cab was a good fit for the Walter, since it is a bit scooped in the mids, and has an inherent deep low end. However, the Markbass F1 sounded better to me with that cab... just as deep, but at the same time, more low mid present and punchy, and pretty much just as loud.
Also, it is not as issue with true low end. Cranking the bass control on the Walter Electracoustics is not a very useful thing to do. It's more a lack of upper bass and low mid punch that isn't really remedied by the semi-parametric low mid control (which seems very narrow Q). It isn't a lack of deep low end, but a lack of push and thump and balls in that key 60-200hz range. IMO and many years of IME.
I thought my Ultra sounded awful with a 410XLT... a middy, congested, compressed mess to my ears, and so different from the HT322 that it surprises me that you would dig both, or equate the low end response of one with the other.