Not necessarily, Shearwater Petrel 2: $749, Oceanic VT 4.1 complete with transmitter and download cable: $700
Entirely different classes of computers for entirely different purposes. Closest thing with the functionality (sort of almost) is an Eon Steel at what, $1500?
The functionality of a Petrel is an order of magnitude great than the VT 4.1, especially in the context of technical diving, so what's the point of even making a comparison?