You dont read a Champion like an NGK. The Champions are way easier to read, and the heat ranges make sense.
If you had an issue with a spark plug, it's YOU not the plug.
Also, cross reference charts are WORTHLESS. Use the book from the plug manufacturer you are going to use. Don't use a cross reference to select heat range.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston