Um, what?
There are dozens more BA-listed beers if you search "Weizenbock" which have descriptors in color and flavor that are simply bigger, badder hefeweizen. Conversely, there are
two beers listed as "Imperial Hefeweizen" - the one you listed and the one from Big Rock brewpub. Thus we can dismiss that use of the "style" descriptor as marketing a trendy name amongst beer enthusiasts.
Victory's Moonglow, Ramstein's Winter Wheat and Schneider's Aventinus are all pale Weizenbocks.
Seems to me a Weizenbock, according to the commercial benchmarks, is
exactly like a Hefeweizen, 'cept bigger.
Of course, I argue from the perspective of being sick unto a shuddering, raspy
death of everything that's a "bigger,
faster,
louder MORE" version of an accepted style being labeled "Imperial". I think calling a stupidly large flavorbomb of a hoppy beer an "Imperial Imperial Pale Ale" as dumb as saying "VIN number". In this case, calling it "Imperial Hefeweizen" is dumb, because you can call it "Weizenbock."
Cheers,
Bob
EDITED TO ADD:
I think calling a stupidly large flavorbomb of a hoppy beer an "Imperial Imperial Pale Ale" as dumb as saying "VIN number".
I was taking my evening constitutional with my wife after typing this, and I realized as I told her the story how stupid this statement was. "Imperial
India Pale Ale" isn't such a stupid thing to say, and I'll pretend I didn't say the bit vehicle identification number.
"Imperial Stout" makes sense, as that style of strong stout was brewed for the Tsar's Imperial court in the 19th century. In fact, IIRC, the original bottled brand had "Imperial" on the label.
"Imperial India Pale Ale" makes a certain amount of sense, because India was part of the British Empire.
"Imperial Witbier" makes me want to hurl, because Belgium didn't even
have an empire, unless you count the three weeks they held the Congo.
Calling a big beer "Imperial" is trendy. That's what makes me itch. Call it a "Double" or something, like "Doppelbock". "Dobbel Wit" is clever and impressively Fleming; "Imperial Wit" is trendy and buzz-word.