Standard Joye510 batts are 3.7v with 180mah, so since they *are* a 3.7v PV I'd say they compare exactly the same! Other modded 3.7v PVs have more milliamps, so they will more or less
vape the same as a stock 510, but they will just last and perform consistently for a lot longer.
The regular el-cheapo 510 PTs with a 3.7v inline battery will also perform more or less the same. But there are more expensive trick PT's out there (with no inline battery) that will enable 5volts - THEN you will notice a difference in
vaping performance. But then your attys may not last as long if you ride on the button or let it run dry.
Just think of it this simplified way:
Volts=power
MilliAmps=duration