I think no one has such a great potential to hit btc at all. But as we know btc has lost a lot of dominance in the global market so we can't just be sure about all this. But if we see of such a case then bch might just match it up in value but it will be just because bch is already about double of Ether. if we see a pump it will be the first to reach btc. But in case of market cap surely ETH will win the race against btc as it has some great tokens running on it too.