I bought a knock off Bruce, 33 lb. on ebay for $99 including shipping. It is one piece of cast with a hole in it. I don't fear in any way the it will some how fall apart. That is rediculous.
Not really so ridiculous..

The original Bruce was heat treated the knock offs are not...
Photo courtesy Craig Smith
According to an archive post by a prominate memeber the dimensions are the same as the "yachting"(expensive) claw anchor.
I don't know whom the member was but this is not always true. Place a genuine Bruce next to many a knock off and you will see differences in shape and geometry.
Even the Lewmar "Claw" is, and always has been, a knock of of the Genuine Bruce that is different in many ways. The angle of the shank, the wings/flukes and over all shape are not identical to the Genuine Bruce and this is about the best quality cast knock off. It is also not a heat treated anchor as the Genuine Bruce was.
I have personally had an original Bruce and a Lewmar Claw side-by-side and they are absolutely not identical nor are they the "same". Lewmar even readily admits to this, that it is slightly different, if you ask..
Seeing as my own boat was hit, to the tune of nearly 25k in damage, by a guy who insisted on using "knock off" shackles that were cast, not forged, and one failed, a non heat treated Bruce knock off would be very low on my personal list of recommended anchors. Now if you want a real Bruce or a Manson Ray then that's a different story they are both very good quality.
Lewmar, for example, even freely admits that the dimensions of the Claw are "similar" but "not the same as the original Bruce" and that the anchor is not heat treated as the Genuine Bruce was. The lack of heat treating is a major difference and one Bruce was not willing to compromise on to be "competitive". They pulled their product off the market entirely rather than compromise it to be competitive..
One other point about the Lewmar Claw is that Lewmar only puts a three year warranty on it..? The CQR & Delta Fast Set, other Lewmar anchors, have lifetime warranties, but not the Claw?
Perhaps Lewmar does not have the full confidence in the construction quality to even match the other anchors they sell and own? Food for thought anyway..
There is a difference between the Genuine Bruce and all the knock off anchors including the Lewmar Claw.
The Manson Ray is probably the best constructed "claw" style anchor but like the Genuine Bruce you will have to pay $$$$ for this level of quality.
While the odds of you breaking a Bruce knock off are probably quite low, it has happened..