You can have your own opinions. You can't have your own facts.
1st Half
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Johnson's runs (1,0,2,5,31,1,10,0,2,8)
Johnson 10 for 60
Titans 18 for 74
Score 45-0
2nd Half
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Johnson's runs (0,48,8,3,3,1,5)
Johnson 7 for 68
Titans 18 for 119
Score 14-0
So a quick check of your "facts"...
"Chris Johnson gained 128 yards on 17 carries" - True
"That happened against the first string defense" - Misleading, 76 of his yards (60%) came after the score was 35-0. By that time, subs were liberally being used.
"Tennessee wasn't running all that often after the half" - False, they ran just as much after the half and gained 62% of their rushing yards in the 2nd half.
If your "facts" are that far off, you might want to reevaluate your "opinions".