in the long run it will not matter at all because miners will always mine what is most profitable and bitcoin will remain that. similar to bitcoin-cash shenanigans we can expect a lot of chaos in bitcoin when they steal hashrate by making their chain more profitable to mine at first but in the end miners will come back to bitcoin. and as a result there won't be any bitcoin price change.
by the way, how do you know the following. SV chain has not started yet, has it?
the amount of hashrate that is going to support the Bitcoin SV fork.