So you completely missed the entire point of what I said ... the issue is they are using a too low 75% ...
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BIP101 activates *only* if XT has >75% of hashing power.
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False.
Bitcoin mining is random statistics.
It's not 10 minutes per block, every block.
Edit: and to give an example:
My pool mined 17 blocks at under 30% difficulty - yep luck was on a roll when that happened.
At the time, if there was any voting happening, for that period of time my pool would have effectively voted at over 300% of it's hash power.
Have you actually done the math? The likelihood that luck plays a major part in 750/1000 blocks is not high at all.