Jon, the difference is what is claimed by the manufacturer/reseller vs what is provided.
Swiftech never said that their pumps had 50000hr MTBF's, and in fact if you pushed Bill on the MTBF of the MCP600 when it was released, he wasn't able to provide one because I don't believe that the OEM manufacturer had a value to give either. Maybe they did, I don't know, but it was never advertised as having a ~7yr MTBF.
What the issue here is when someone comes onto the market with a cheap and poorly made pump, and starts spouting figures for reliability that are the reserve of well designed higher priced pumps.
That the pumps fail is not the issue. The issue is that certain individuals have put their reputation on the line in backing a product that does not even remotely match what was being advertised as its reliability.
Things fail. Fact of life. Quite a different matter to effectively dupe people into buying a faulty product under the pretence that it is better than what it is, and then start back-pedalling and finally dumping the company to divorce oneself from their created liability when the brown stuff hits the fan.
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