In theory you are right but I believe many of the people owning the previous version of it running at 2.4 Ghs are already pointing it to Ethereum Classic as they have huge processing power and so far to be honest the ETC is better maintained compared to ETHW that is why we still see a low difficulty for the ETHW less than 300 T while for Ethereum Classic is up to 7 times more or something on those lines,so even if people buy the new E9 at almost 4 Ghs they will most likely point to Etherum Classic.

For my personal opinion anyone getting such device should point it 2 weeks in ETHF(Ethereum Fair) about 1.5 months in ETHW and then switch it to ETC.This can prove to be the best strategy for the long run.