It is obvious what mic they tried to copy but in my opinion they completely surpassed the e906. The B906 rolls off tiny bit earlier on the low end and also has abit of a pad in the low-mid, which really helps with the proximity effect when you hang it by a cable in front of the cab.
The only thing the Sennheiser has going for itself is the metal chassis. But the B906 plastic seems durable enaugh. Can't use it as a baseball bat, but it seems to me not the intended use anyway and you can find much better mics to use as bats (AT4092 for example).
For this price totally worth it. If you take good care of it it will return the favor.