Iv'e mixed for mtl and sub ohm using the same liquid and percentages. One was a Heisenberg concentrate and the other was Hangsen's highway. Highway at 7% was lovely in my mtl tanks, but too strong in my sub ohm. The Heisenberg was way too strong in my sub ohm tanks, but also fine in my mtl tanks.
In my limited experience, if it tastes good in your sub ohm tank. You need to up the percentage of concentrate to feel it in your mtl tank.