Does Wham-O need Viagra?

Factual Questions
1

Based on the testing at http://www.freewebz.com/superballs/ the original version of the Wham-O Superball would bounce back to 92% of the height it was dropped from. The current version (made in China) only has an 81.6% return rate. While I understand that the smaller size of the current Superball (1-13/16" as opposed to the original’s 1-15/16") might lessen bounce height, the question arises as to the quality of Zectron obtainable in China as opposed to American Zectron. Were I Wham-O I’d be worried about smaller size and loss of performance, but I’m not an expert in this area. Any observations/suggestions/conclusions?