If running a power curve during an acceleration there will be an increased inertia caused by bigger wheels/tyres, however the torque output will be the same as long as the total gearing remains the same. The only difference is that the increased inertia will make the acceleration slower. This is a good thing as it is closer to steady state running (i.e. running at a set speed & load).
Taking steady state points (i.e. 1000 rpm, 1500 rpm) and logging the data then moving on to the next speed on the power curve, the bigger wheels/tyres will make no difference.
Its the same as having a heavy car Vs a light car. The power output is the same, its just the acceleration thats affected.
If the total gearing changes because of the change in wheel/tyre size then torque at the wheels will change. Power will remain the same though as power is based on torque and rpm. Bigger wheels = less torque but more rpm which cancel each other out when looking at power.
If you want more torque at the wheels go for smaller diameter wheels & tyres.