So this is something of a hypothetical question:
When I had knee problems, my physical therapist had a small device which he used to measure the power in my left and right leg but also the power individually of the three big muscles in both of my legs.
There was a big difference between my left and right leg. And a really big difference between the three big muscles in my right leg so we targeted that in therapy.
After the complaints we re-tested my right leg and the balance between the three muscles was a lot better, unfortunately we didn’t test my left leg at that time as well.
Would that measured imbalance between the legs automatically transfer over on the bike or could you still get different results because you use your muscles in a different way on the bike when pedaling compared to when the muscles get tested isolated.