Question on port matching

Absolutely! Now -

How does the larger intake port to a smaller cylinder head port help and by how much or percentage is the intake port larger than the head port?

The ability of the intake or not, is not of or in question here. The question is, stated above.
Either dead nuts matching or intake manifold window slightly, example -.020 bigger.


As to how much bigger you can go before it's detrimental to power I have not tested so that's something you need to consider when playing with this stuff to error on the safe side