110 can't be longer by definition. It rejects blocks that core accepts. So unless they have a majority of hashrate significant enough to overcome rejected blocks making them shorter, it can't be longer. Current generous estimates are they have 2% of hash.

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Hashrate dominance isn't the only factor, protocol adherence is key.
So if a majority of the hashrate will be on the current chain then no one will lose out right? Or has it been leaked that 2 of the Chinese pools (no names published) are definitely going to activate just before launch? I probably shouldn’t do this, but BIP-110 is the new chain and the hash rate will be there. I’m not guessing on this. #runbip110
For the record, Lets call it the “Core chain” accepts all of BIP-110 blocks. So when BIP-110 mines a block it is on the “Core chain.” Which means (not that I have inside knowledge) that miners might choose the path of least resistance and move to BIP-110 because it is valid on the future Bitcoin Chain. Right?