Bill, I will not enter a meta discussion any further.
On your other questions
There are two seperate points:
I. (comparing two positions, assigning a value to them)
the tewari analysis:
Is the 6-3 move better if the 4-4 answer is already in place and black can not choose to play on the 3-4 point anymore? (I think yes, and you doubted this. I quoted my Kombilo database proportion to support my point of view)
II. (is a move reasonable at all, no comparison, no value assigned)
Is a move reasonable choice at all? (talking about the 6-3 point in this case, here I do not look at a proportion at all, i just look if it ever appears in pro play)
I do not say the 6-3 inside approach is better than any other viable play, I just say it is a reasonable move. The shown variations in this thread, the tewari heuristics (including the alphago evaluation), the lack of refutations and the win rates of several strong go engines (never showing less than rounded 50% winrate in any forced variation) are the foundation for my assertion: The 6-3 inside approach is a reasonable move against the ninrensei fuseki.
In the further discussion I prefer adplay arguments over adhominem arguments

If you think my move is bad, just show me and dont critisize my methods
