Hi, you've found one of the big differences between Hypersaw and traditional patch unison for supersaw-like patches.
Whereas traditional unison (at least on the Virus) modulates the start offset (of [each of] the oscillator[s]) in a very controlled way, almost like a triangle LFO waveform would - resulting in a very focused and clean sound, each and every time you trigger the patch - the Hypersaw's individual saws' start offset(s) on the other hand are all random. You can hit a key and find nearly all 9 oscillators are triggered in phase, but you can hit the note again straight afterwards and find they're all completely mixed (all have different phases) regardless of detune amount.
Unfortunately if you want coherent phase per each keypress, you need to use traditional unison or add the third oscillator instead, at the cost of polyphony.