Interesting.
Yes, the KB definately is an octave higher. I can see this in the waveforms too (after dragging them into Wavelab). Sub-osc aside, might you have the KB increased by +12 semitones in the Global Transpose settings (in the Ctrl menu), or vice versa on the TI2? These settings would bypass any patch data and could cause the effect heard.
On a separate issue, it's always going to be slightly difficult comparing some patches on both keyboards at once due to the free-running, time variant nature of the oscillators, LFOs etc, on either, and the different levels coming from each synth (VirusTi +4dBu [balanced] vs. VirusB -10dBV [unbalanced]), as you noted and compensated for.
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PS > And another thing! Will the Ti|3 have user customisable/importable wavetables?
A ribbon-controller or XY-Pad might be nice, too, please! Thanks!