Well no. The one with softer money will have more exports and your production will die
Discussion
Why would the softer money have more exports? Because they can print money to skew economic data to produce more goods in high demand sectors? But that money printing doesn't make REAL productivity. It's artificially inflated by sprinting to make more goods if you will. That would cause malinvestments and the hard money economy would be slower but much more efficient with much less waste.
If everyone has Bitcoin, then nobody has an advantage.
Well yes but they're arguing a fiat economy would beat a bitcoin one because they can export more. Akin to China vs US. But it's apples to oranges because they both have their own fists.
My assumptions are based upon widespread bitcoin adoption, I suppose. I'm not including monetary differentials.
Because hard money can buy more. It simple ss that. For the same reason imports are expensive for the one with softer money. It is up to the profile of the economy of the country what is better. For example soon Bulgaria will enter the eurozone it seems and € is harder than the currency it has now. Will that be good for Bulgaria or a disaster? I can bet that it will be a disaster.