i am more on the side of selling ERG (if you have any) to buy BTC. just look at the current ranking of this alt and you know that it won't even come near with BTC. but it is your prerogative to invest on this market, you have short-term and long-term plans. so it depends on your strategy here. some can possibly earn profit from ERG on a short-term basis. in this regard, there's no concrete path that you can take, but the profitability depends on your next steps, how you will handle such assets.
Bitcoin (BTC) has more fundamentals than Ergo (ERG), however, it will take a long time to get any real profit if it comes down to investing in Bitcoin (BTC).
I don't blame the OP for being on the Ergo (ERG) side, but it would be wise indeed to invest in Bitcoin (BTC) for now because of the hype that Halving events might create (as I mentioned in my previous post).