Possible.
But I have ran both on real hardware on old laptop and from VM on fairly-modern hardware.
I get the same results in both - Supermium is the only one pegging at 100% for 2 to 4 minutes, dropping to 2% for 10 seconds, then pegging again for another 2 to 4 minutes.
I can only speak towards what I witness - and that is that Thorium works better, much MUCH better, on my hardware.
Supermium can NOT be ran from a VM, the 100% CPU is far FAR worse when ran from a VM. But I suppose that's okay, we should be targeting real hardware.