No it doesnt since coins do have different values and do have different difficulties on mining it which means profits or earnings cant really be the same and also it depends on which GPU would you use. $5.80 per days on 1070 seems fine to me and i assume hes mining ETH or ZEC (no one knows since he didnt mentioned in the very fist place). Just try out another coin and simply compare them you will see what i mean.
5.80 per card? really???
This doesn't add up at all, it just doesn't.
one 1070 at 25MH/s, right now whattomine shows feathercoin at 3.08 a dayu.
He is claiming almost 2x that. Seeing how many coins are not shown in the what to mine math, i see how this is possible now, but its a tedious exercise to figure this out I assume, though well worth it assuming you can actually discover a better one to mine, but you can't know until you actually sample mine and see how it turns out right?
Sometimes you spot a coin that is not listed and you mine more than double than the best coin on whattomine or other calculators. That's how it works
Anyway right not the profitability is decreased, but since a few days ago 5$ were normal